Math, asked by shuklamadhulika37, 2 months ago

Find the fourth proportion to each of the following 1/4,4/6,7/12​

Answers

Answered by anuradhaanuradha9643
0

Step-by-step explanation:

4th proportional to 3,12 and 4

=\frac{12\times4}{3}=

3

12×4

= 16

(ii) 4th proportional to 5,9 and 45

=\frac{94\times5}{5}=

5

94×5

= 81

(iii) 4th proportional to 2.1, 1.5 and 8.4

=\frac{1.5\times8.4}{2.1}=

2.1

1.5×8.4

=1.5\times4=6.0=1.5×4=6.0

(iv) 4th proportional to \frac{1}{3},\frac{2}{5}\ and\ 8.4

3

1

,

5

2

and 8.4

=\frac{2}{5}\times8.4\times\frac{3}{1}=

5

2

×8.4×

1

3

=\frac{2\times84\times3}{5\times10\times1}=\frac{252}{25}=10.08=

5×10×1

2×84×3 = 25

252

=10.08

(v) 4th proportional to 4 hours 40 minutes, 1 hour 10 minutes and 16 hours

=4\times60+40=280\ hours=4×60+40=280 hours

=1\times60+10=70\ hours=1×60+10=70 hours

=16\times60=940\ hours=16×60=940 hours

Fourth proportional = \frac{70\times940}{280}

280

70×940

= 240 minutes

=\frac{240}{60}=

60

240

= 4 hours

Answered by aryanpriyadarshi43
1
4:16
16:24
28:48
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