With this information, you can calculate the quantity of feet per minute 4 knots is equal to.
¿What is the inverse calculation between 1 foot per minute and 4 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 foot per minute is 0.0024686825 times 4 knots.
Which is the same to say that 4 knots is 405.07437 feet per minute.
Four knots equals to four hundred five feet per minute. *Approximation
A foot per minute is zero times four knots. *Approximation
