Proportions and Ratios Test

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the variable.

Front

If a/b = c/d, what is the cross-multiplication method?

Back

The cross-multiplication method states that a*d = b*c.

Front

What is the value of x in the proportion 4/x = 8/10?

Back

x = 5.

Front

If m/4 = 9/6, what is the value of m?

Back

m = 6.

Front

Solve for q in the proportion 2/q = 9/18.

Back

q = 4.

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

How can you express a ratio as a fraction?

Back

A ratio a:b can be expressed as the fraction a/b.

Front

What is the first step in solving the equation x/10 = 4/5?

Back

Cross-multiply to get 5x = 40.