I saw normally there are several ratios that should be kept in mind.

For noodle, it is said to be 3.5:1.

Or 500g wheat powder to 300g water, that is 5:3.

Or just use 3:1.

For bread it is 2.5:1.

For pan cake or oil stick, it is 2:1.

These ratios are different so the mixture is just the right density.