Find the third proportional of:
(i) 2 m 40 cm and 40 cm
(ii) 1.8 and 0.6

Open in App

Solution

(i) 2 m 40 cm and 40 cm
It can be written as
240 cm and 40 cm
Here the 3rd proportional = (40 $\times$ 40)/ 240 = 20/3 = 6 2/3 cm

(ii) 1.8 and 0.6
Here the 3rd proportional = (0.6 $\times$ 0.6)/ 1.8 = 0.36/ 1.8
Multiplying by 100
= 36/ 180
So we get
= 1/5
= 0.2

Suggest Corrections

Similar questions

Q. Find the third proportional of:

240 c m

and

40

c m

Q. Find the third proportional to

1

60

cm,

40

cm.

Q. Find the third proportional of:

1.8

and

0.6

There are two lawns in the shape of a rectangle. Find the perimeter of the lawns if its lengths and breadths are given as follows:
i. l = 10 cm, b = 8 cm
ii. l = 18 cm, b = 12 cm
where l = length and b = breadth

Q. Find the fourth proportional of:
(i) 1/3, 2/5 and 8.4
(ii) 4 hours 40 minutes, 1 hour 10 minutes and 16 hours

Join BYJU'S Learning Program

Find the third proportional of: (i) 2 m 40 cm and 40 cm (ii) 1.8 and 0.6

(i) 2 m 40 cm and 40 cm It can be written as 240 cm and 40 cm Here the 3rd proportional = (40 × 40)/ 240 = 20/3 = 6 2/3 cm (ii) 1.8 and 0.6 Here the 3rd proportional = (0.6 × 0.6)/ 1.8 = 0.36/ 1.8 Multiplying by 100 = 36/ 180 So we get = 1/5 = 0.2

Find the third proportional of:
(i) 2 m 40 cm and 40 cm
(ii) 1.8 and 0.6

(i) 2 m 40 cm and 40 cm
It can be written as
240 cm and 40 cm
Here the 3rd proportional = (40 $\times$ 40)/ 240 = 20/3 = 6 2/3 cm

(ii) 1.8 and 0.6
Here the 3rd proportional = (0.6 $\times$ 0.6)/ 1.8 = 0.36/ 1.8
Multiplying by 100
= 36/ 180
So we get
= 1/5
= 0.2