Crossword Genius

Anyone can enjoy this ratio? (4-2-3)

Ross

I believe the answer is:

free-to-air

'anyone can enjoy this' is the definition.
(anyone can watch free-to-air TV)

I don't understand how the rest of the clue works.

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.