If x+2, 2, 5x-4 and 9 are in proportion, find x.
25
26
13
28
Given that x+22=5x−49
i.e.,9x+18=10x−8
Therefore, x=26
If x2, 4 and 9 are in continued proportion, find x.
If 9, x, x and 25 are in proportion, find the value of x.