Ratio and Proportion

Front

What is a Ratio?

Back

A ratio is a comparison of two quantities.

Front

Solve the proportion: 4/10 = x/20

Back

x = 8

Front

What is Proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

Solve the proportion: 5/x = 15/45

Back

x = 3

Front

What is the Cross-Multiplication Method?

Back

A method used to solve proportions by multiplying the means and extremes.

Front

Solve the proportion: 8 : 9 = 24 : ?

Back

? = 27 (False statement)

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same relationship between quantities.

Front

Solve the proportion: 3/4 = x/12

Back

x = 9

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

Solve the proportion: 10 : 5 = x : 15

Back

x = 30