Your local weather report announces that the barometric pressure is 30.44 inHg. Convert this pressure to psi.? Convert a pressure of 23.8 in Hg to kPa

You basically have to use two conversion factors to go from inHg to psi in the first case, and from inHg to kPa in the second case.

1 inHg is defined as being equal to 0.491098 psi, which means youi'll get

##"30.44"cancel("inHg") * "0.491098 psi"/cancel("1 inHg") = "14.95 psi"##

Likewise, 1 inHg is defined as 3386.389 Pa, which means that, in kPa, your pressure will be equal to

##"30.44"cancel("inHg") * ("3386.389"cancel("Pa"))/cancel("1 inHg") * "1 kPa"/("1000"cancel("Pa")) = "103.1 kPa"##