Calculating fuel required for a 3 degree approach landing, please help!
 

I have a fictional assignment to create a flight plan from Heathrow-Glasgow airport in a Beech 1900c aircraft and am using the ILS 06 approach for Glasgow which has a recommended 3 degree glide path but im not sure how to calculate the fuel for this part as we have been provided with a POH but the only performance charts for fuel to descend are for a descent rate of 1500ft/min so how do i calculate it for approx 550ft/min (3 degree path). I would really appreciate some help as this is the only part that is stumping me. Thanks!

1500fpm is still 3 degrees albeit at a higher speed.
Fly the approach at 450kts. :8

You're overthinking this one.
You probably have a chart for 60 or 65% power cruise. That's pretty close to the power setting you'll be using during the descent with flaps out and gear down.
Without knowing the scope of the assignment you're doing and the detail of the charts you have I'd suggest 15 min at 65% for the approach.
In real life you take a best estimate and always round up.

I would use the same from what I remember the power setting on the approach was about 12-1300 lbs tq from the max of 3200 lbs tq, this roughly calculates to 39% power.

The go-around power setting is obviously 100% so a cruise power setting chart of 65-70% power would work.

You could always play it safe and use cruise tables for the approach and the climb charts for the go-around part after the missed approach point

Thanks guys really appreciate it.

Use the descent table from cruise altitude to altitude of the airfield.

Care to tell us what this is for?

University homework assignment, see the OP's other posts.