Question
A major chord in music is composed of notes whose frequencies are in the ratio 4: 5: 6 . If the first note of a chord has a frequency of 264 hertz (middle $C$ on the piano), find the frequencies of the other two notes.
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A major chord in music is composed of notes whose frequencies are in the ratio $4: 5: 6 .$ If the first note of a chord has a frequency of 264 hertz (middle $\mathrm{C}$ on the piano), find the frequencies of the other two notes. Hint: Set up two proportions using 4: 5 and 4: 6 .
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A minor chord in music is composed of notes whose frequencies are in the ratio $10: 12: 15 .$ If the first note of a minor chord is $\mathrm{A},$ with a frequency of 220 hertz, what are the frequencies of the other two notes?
A minor chord is composed of notes whose frequencies are in the ratio 10: 12: 15 . If the first note of a minor chord is $\mathrm{A}$, with a frequency of 220 hertz, what are the frequencies of the other two notes?
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