It's this fourth dimension that makes things tricky. The most commonly measured aspect of hoof balance is toe angle. Somewhere along the line, long before the hoof protractor was invented, some fellow who probably never shod horses decided that 45 degrees was the proper toe angle for front hooves. This erroneous idea has been passed down in books from around 1800 to the present. Such a low angle is out of balance for most all horses.
Many farriers consider the shoulder angle when determining the toe angle for the fore hooves.
This can be indeed be useful. The methods of establishing the correct toe angle usually apply to the fore hooves. But we have yet to factor in Time. The hoof wall grows fastest where it bears the least weight. Increasing the hoof angle shifts weight from the heels to the toe, decreasing it has the opposite effect.