The C major key, starting with the middle C, consists of seven notes (white keys on the piano) with the following frequencies.NoteCDEFGABFrequency(Hz)261.6293.7329.6349.2392.0440.0493.9Determine the ratio of the note A to middle C.
Answer
A
1.6818
B
1.4983
C
1.5348
D
1.3654
Explanation
Divide the frequency of A by the frequency of middle C: 440.0 ÷ 261.6 ≈ 1.682. Therefore, the ratio of A to middle C is about 1.6818, choice a.
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