Question

is 1.615:1 a golden ratio

Answer 1

since,
golden ratio = 1.61803399:1
therefore your ratio is inaccurate and shouldn't be referred to as the golden ratio....
\\thus it shouldn't be recognized as the golden ratio//

Answer 2

Answer:

yes 1.615:1 is a golden ratio

Step-by-step explanation:

for rectangles ratio  of long side to short side is roughly 1.615:1