With this information, you can calculate the quantity of knots 408 feet per minute is equal to.
¿What is the inverse calculation between 1 knot and 408 feet per minute?
Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.24820733 times 408 feet per minute.
Which is the same to say that 408 feet per minute is 4.0288898 knots.
Four hundred eight feet per minute equals to four knots. *Approximation
A knot is zero times four hundred eight feet per minute. *Approximation