Proportation

Integer Ratios

100

x:36 = 28:42

24

200

45:x = 30:56

x=84

300

54:72 = x:60

  Answer: x=45

400

64:48 = 36:x

Answer: x=27

500

75:25 = x:38

Answer: x=114

Decimal Ratios

100

6.5:x = 13:7.8  

Answer: x=3.9

200

4.5:7.5 = x:6.4  

Answer: x=3.84

300

9.6:6.4 = 7.2:x  

Answer: x=4.8

400

x:5.4 = 8.1:10.8  

Answer: x=4.05

500

7.8:3.9 = x:4.6  

Answer: x=9.2

Ratios with Percentages

100

x:25 = 75%:15  

Answer: x=1.25

200

.4.8:x = 60%:3.5  

Answer: x=28

300

35%:4.2 = x:7.8  

Answer: x=0.65

400

56:32 = x:80%  

Answer: x=1.4

500

8.4:14 = 72%:x  

Answer: x=1.2