Implaied odds can also be used to calculate the amount of $ put into the pot by players after you.

Say we have 10 of us playing, blinds 10/20, everyone limps (200 in the pot), and the BB raises to 3x the BB (60), the player UTG has to call 40 to win 260, odds of 7.5-1.

HOWEVER - the players behind will more than likely call aswell, having invested 20 and only costing 40 to win more and more each time.

So with 7.5-1 pot odds at the same, you can use implied odds to say add 7 other peoples 40 chip call to be on the safe side, making it 40 to win like 600 = 15-1