Scaling up a pizza dough recipe

[HeyMacWey]

My go to recipe is based on 300g of flour. I need to increase by a third to 400g.

Do i just increase the rest of the ingredients by a third too?

Yes. I'm quite random with pizza dough. If I need more, I just chuck in an extra cup of flour and a pinch more raising agent...similarly a little more water and oil.