Do human body proportions vary with height?

Factual Questions
1

Art classes generally teach that the average human is 7.5 to 8 times as tall as his/her head. (I don’t know what the actual value is for the large population.) I wonder if this ratio varies with height.

For example, if one measured 1000 adult males who were 5’6" and found that the average ratio of body height to skull height was, say, 7.8, and then measured 1000 adult males who were 7’, would the average ratio be the same? If it were less, it would mean that the additional height would tend to come from longer legs or a longer trunk.

Have there been any studies to see whether such ratios vary over a range of absolute heights? I realize that things would probably be different in those with conditions such as dwarfism or gigantism, so I am talking about studies of individuals without these kinds of conditions.

2

Are you aware of the square-cube law? Weight/mass increases with volume (the cube of length), but the strength of muscle increases approximately with cross sectional area (the square of length).
Thus, a “neutral” expectation would not be that human proportions remain constant, but that taller people will have thicker bones and bulkier muscles (think of the giant on Game of Thrones) in order to support and maneuver their own body weight. Typically, a small person, even if skinny with little proportionate muscle bulk, has much greater strength for their body weight, thus greater agility - think of tiny teenage gymnasts throwing their bodies around.

3

Yes. Albeit not strongly correlated. But strongly impacts perception of body size.