Why don't the Altitude-DME values in the approach profile match the Groundspeed-FPM values in the conversion table?
When the calculation is made with the values given in the conversion table, the altitude values in the profile view are significantly different. To give an example from the picture, we see a profile descending from 2000 feet to 900 feet at an angle of 3 degrees. Assuming we descend at 70 knots, the vertical velocity we need to maintain has to be 372 fpm. We fly the distance of 3.4 DME between waypoints at a speed of 70 knots in 2.9142857 minutes. In 2.9142857 minutes, at 372 fpm, we would descend to 2.9142857*372=1084.1142804 feet. Although the altitude difference is 2000'-900'=1100', we calculated the altitude value to be descended as 1084'. Where does the difference of 1100'-1084'=16 feet come from?
Also, you can reach another question I asked very similar to this question from this link: Why are the altitudes and distances in the profile view different when calculated with the fpm values in the conversion table on Jeppesen charts?