1. Proportions Determine if the ratios can form a proportion. ,
COURSE 2 LESSON 5-4
Proportions
Determine if the ratios can form a proportion. 42 56 , 64 42 56
Divide 42 and 56 by their GCF, which is 14. = 3 4 42 56
÷ 14 56 64
Divide 56 and 64 by their GCF, which is 8. = 7 8 56 64
÷ 8
The ratios in simplest form are not equal. They cannot form a proportion.
5-4

2. Proportions  9  8  6 Determine if the ratios can form a proportion.
COURSE 2 LESSON 5-4
Proportions
Determine if the ratios can form a proportion. 2 3 18 24 , a. 5 4 30 b.
 9
 8
 6 2 3 18 24 5 4 30 24
and cannot
form a proportion. 2 3 18 24
and can form a proportion. 5 4 30 24
5-4