Question

all i have is a question because i forgot how to do it. its been a while since i done proportions and i was wondering

how do you know when 2 objects are proportional ?

for example a table is the length of 30 in and there's another table that is length of 15 in. prove that these two objects are proportional.

Answer 1

You see by proportional it means they have the same ratio.

1/2=2/4=4/8

Answer 2

So if someone says ratio of x:y is 1/2 and ratio of w:v is 2/4 Both are proportional to each other.

Answer 3

ohh and how do i prove that 2 objects are similar ?
sorry i haven't done these in a while and i forgot

Answer 4

Usually we have figures like rectangle. Let length bread ratio be 1/2. If we construct another rectangle with ratio 2:4. Then both these are proportional. Geometrically this mean first figure has been maginified 2 times.

Answer 5

ohh okk. but umm ok look i did a model of my table and i have to " Write a proof demonstrating how your model is similar to the object you chose."

Answer 6

and im stuck there.

Answer 7

The question is not so clear. Can you elaborate?

Answer 8

i did a model of my table. my table is round. the round part of my table measures 30 inches and in my model i did it by half (which means my model round part measures 15 inches). now i have to prove how my model is similar to my table.

Answer 9

and i dont know how to prove it. and then i got the idea of proportions but i dont think that will work..

Answer 10

15*2=30 Essentially the bigger round table is maginifed 2 times than the smaller one.

Answer 11

thats it ? thats how i know its similar? thats how i prove its similar ?

Answer 12

Yeah. you could also do something like that for the legs. Maybe their height is also 2 times?

Answer 13

yeah everything is 2 times bigger then. i did everything by half

Answer 14

Thank youu :)

Answer 15

yw :)