Ratios and Proportions Review

Ratio - A ratio compares two quantities.

Ratios can be simplified just like fractions.

6

5

X

3

3
=

15

18

Simplify -
4
10
6
5
=
=
2
10
25
18
8
=
=

When two ratios are set equal to each other they

form a proportion. Two ratios are said to be

proportional is their cross products are equal.

Does 3 x 24 = 9 x 8?
3
8
=

?

24
9
15
15 x
45
=

?

yes or no?
18

6

=  6 x
?
=
?

7

7 x

2

=

?

yes or no?

6

21

=  21 x
?
=
?
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