Pot Odds

[Rbower]

I understand the idea that a good bet is one in which you are getting better odds on your money than the probability of making your hand. If the pot is giving me 10 to 1 on my money and it is 4 to 1 that I will make the winning hand, that is a good bet.

I have question on how to gauge this with two cards to come. For sake of this question I’m using approximations. I know that on the flop if I have two hearts in my hand and there are two hearts on the board, it is approximately 2 to 1 that I will get a flush by the river. Does that mean I need to get 2 to 1 on my money before the turn card or 4 to 1? It’s about 4 to 1 that I will get the flush on the turn and then 4 to 1 again that I will get it on the river. I’ve only been going for a flush if I’m getting 4 to 1 on each street, but I read in a book yesterday that I should be using 2 to 1 on the turn and then 4 to 1 on the river.