Ratio & Proportion
Master the fundamentals of ratio and proportion with this easy-to-understand flashcard deck. Designed for students and competitive exam preparation, this deck covers key concepts, formulas, simplification techniques, and real-life examples.
Cards in this deck
What is a ratio?
A comparison of two quantities using division.
What is the ratio formula?
Ratio= a / b
What is proportion?
Equality of two ratios.
What is the proportion formula?
a / b = c / d
What is a simple ratio?
A ratio expressed in simplest form (e.g., 2:3).
What is a continued ratio?
A comparison of more than two quantities (e.g., a:b:c).
What is an equivalent ratio?
Ratios that have the same value (e.g., 2:4 = 1:2).
What is cross multiplication in proportion?
a×d=b×c
What is direct proportion?
When two quantities increase or decrease together.
What is inverse proportion?
When one quantity increases while the other decreases.
What is the formula for direct proportion?
y=kx
What is the formula for inverse proportion?
xy=k
What is ratio simplification?
Dividing both terms by their greatest common divisor.
What is a unit ratio?
A ratio where the second term is 1.
What is part-to-part ratio?
Comparing different parts of a whole.
What is part-to-whole ratio?
Comparing a part with the total.
What is compound ratio?
The product of two or more ratios.
What is a mean proportional?
A value between two numbers such that a / x = x / b
What is a third proportional?
A number such that a / b = b / c
What is a fourth proportional?
A number such that a / b = c / x
What is ratio in real life?
Comparing quantities like speed, price, or ingredients.
What is the ratio of 20 to 30?
2:3
What is 3:4 equivalent ratio?
6:8, 9:12, etc.
What is the proportion 2:3 = x:9 value of x?
x = 6
What is the shortcut to solve proportions?
Use cross multiplication.
What is ratio scaling?
Multiplying or dividing both terms by the same number.
What is ratio comparison?
Converting ratios to fractions for comparison.
What is proportional division?
Dividing a quantity according to a given ratio.
What is constant of proportionality?
The constant value relating two proportional variables.
What is importance of ratio & proportion?
It helps solve real-life and mathematical comparison problems.