convert decimal number to ratio

Hello,

I would like to convert decimal number to ratios, when it is possible.

For example :

0.25 -> 1/4

1/2/3 -> 1/6

...

Some ideas ? Thank you

Answer 1

[Mischa Kim]

Charly, use the rat command:

 rat(1/2/3)
 ans =
 0 + 1/(6)

[Charly]

Thank you, I didn't know this simple command before ;)