Question

(ii) 7,8,11,12 are not in proportion
MODEL
1. Show that:
(a) (1) 5, 6, 10, 12 are in proportion.
(15,32, 135, 225 are not in proportion. (ii) 20,30,40,50 are not i
2. Find x, if
(a) (1) 30:40::x: 60
(b) (1) 2:9::x:27
2 (al Find the third proportional to 12 and 18. (b) Find the fourth proportional to 33.44
1 (a) Find the mean proportional to 16 and 25. (b) Find the mean proportional to 36 and 40
(ii) 36, 48, x are in continued proportion.
(ii) x, 12, 36 are in continued proportion.​

Answer 1

Answer:

1a-5×2-10or6×2-12. 1b-15÷135-9and32×9-288. 2a-40×X=30×60.x=30×60÷40=45. 2b=9×X=2×27=X=2×27/9=6.

Answer 2

bro this is the answer ☝☝