For bp, is it healthier to actually have the proportion between the values of systolic and diastolic pressures to be a certain value? i.e. 120/80=1.5

Pulse pressure: is the term given to the numeric difference between the systolic and diastolic blood pressures.A normal pulse pressure is 40...the difference between 120 and 80.Generally a pulse pressure greater than 40 mm Hg is abnormal.A pulse pressure lower than 40 may mean you have poor heart function; higher may indicate leaky valves or arteriorsclerosis/stiffness of aorta. Treating high blood pressure helps

Ratio not important: The ratio of diastolic to sysstolic pressure is meaningless and is not how doctors evaluate blood pressure. It's the actual numbers that are important. 150/100 also is a ratio of 1.5, but dangerously high. 110/73 has the same ratio but very low risk. Discuss your BP with your own doctor. 120/80 isn't bad, but s/he might suggest you monitor it to assure the diastolic isn't usually over 80.