Trick 72 - Find Missing Term of a Proportion

Use this amazing shortcut to find the missing term of a given proportion....just in a matter of FIVE SECONDS.....Trick 72 is too good for competitive exams.....For more such exciting shortcuts...keep visiting:

[chitrideepak]

Sir please tell working problems of ratio& proportion all models

[bhavanit]

We have to cancel upto we get simplest or not?

[bhavanit]

If we have chance again to cancel what we have to do?

[MrUbercool]

Sir similarly in advanced questions, they ask to find the 3rd proportion, 4th proportion, mean proportion etc from given ratio...what is the method for that?

[ayeshkumar]

15:x::75:8, sir what is the solution??

[Arbajkhan-cclb]

182 : _ : : 210 : 380
what is the ans of this que

[georgeseese]

Why not use the words "mean" and "extreme"? They're good memory aids. I don't see a shortcut here; it's a basic formula taught elsewhere. a/b = c/d (a and d are extremes; b and c are means) ad = bc; ad/b=c (2*35/5 = 14).