Is this a true proportion?

22:88::10: 40

Is this a true proportion?

2" : 12" : : 6" : 24"

Solve for (x)

7 : x : : 35 : 125 =

Solve for (x)

2 qt : 6 qt : : x : 48 qt =

Solve.

What is 45% of 180?

22/88 = 10/40

cross multiply

(22) (40) = (88) (10)

880 = 880 ... true proportion

2/12 = 6/24

(2) (24) = (12) (6)

48 = 72 (incorrect) ... not a true proportion

7/x = 35/125

35x = 7 (125)

35x = 875

x = 875/35

x = 25

2/6 = x/48

6x = 48 (2)

6x = 96

x = 16 qt.

45% of 180 ... turn percent to fraction ... " of " means multiply

0.45 (80) = 36 ... so 45% of 180 is 36