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Finding the Fourth Proportional to 932.77, 1,286.86 and 559.61

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Solution

The fourth proportional to 932.77, 1,286.86 and 559.61 is: 772.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.77 : 1,286.86 = 559.61 : x
  2. Step 2: Convert to fraction form
    932.77/1,286.86 = 559.61/x
  3. Step 3: Cross multiply
    932.77x = 1,286.86 × 559.61
  4. Step 4: Simplify right side
    932.77x = 720,139.34
  5. Step 5: Solve for x
    x = 720,139.34/932.77
  6. Step 6: Final answer
    x = 772.05

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.