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A rational number (with a terminating decimal representation or a repeating, non-terminating decimal representation) can always be expressed in fractional p/q form.

I don't think the additional "rational" qualifier is needed for fractions.

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Looks like all three replies to this share the same misunderstanding of my intent, so I assume my use of “it’s” was unhelpfully vague.

1/pi is not rational and therefore not “a rational fraction”, but think 1/pi is “a fraction”.

Your comment brought me to the realization that the relationship doesn't hold both ways. A rational number can always be written as a fraction but a fraction is not always rational. Never considered this before today :)

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