Is density directly proportional to mass?

No.

It is important to realize that they are different. Many physical properties depend on this distinction. The mass of a sponge may be small but it has a gigantic area.

This is a doubt....by Niranjanrbharati (DP stands for Directly proportional)

Presssure=thrust/area

=>P x A =T

=>T (DP)A

As Thrust is Force

Thrust=Mass x g

A (DP) m x g

A(DP)m

If the calculation is right isnt mass Directly prop. to Area?????

(edit the answer below)