Find the ratio of the fourth proportional of 1 2 and 3 to the fourth proportional of 4 5 and 6

4/5

Step-by-step explanation:

fourth proportional of 1 , 2 , 3

1/2 = 3/d

d = 6

fourth proportional of 4 , 5 , 6

4/5 = 6/d'

d' = 15/2

ratio of d and d'  d: d' = 6 : 15/2 = 4/5

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice