Question

5.
6.
4. (a) If first, second and third terms of a
proportion are 2, 3 and 90, respectively,
then find the fourth term of the
proportion.
(b) If first, second and fourth terms of a
proportion are 10, 7 and 35, respectively,
then find its third term.
(c) If second, third and fourth terms of a
proportion are 18, 10 and 20, respectively,
then find its first term.
(d) If first, third and fourth terms of
a proportion are 1.5, 4.5 and 9.0,
respectively, then find its second term.
​

Answer 1

A) 2:3::90:x
2/3 = 90/x
X = 90x3/2
X = 135

B) 10:7::x:35
X = 50

C) x:18::10:20
X= 9

D) 1.5:x::4.5:9
1.5 x 9/4.5
X= 3

Answer 2

Answer:

x = 3 will be the answer

hope it helps