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Finding the Fourth Proportional to 932.32, 1,286.72 and 559.51

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Solution

The fourth proportional to 932.32, 1,286.72 and 559.51 is: 772.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.32 : 1,286.72 = 559.51 : x
  2. Step 2: Convert to fraction form
    932.32/1,286.72 = 559.51/x
  3. Step 3: Cross multiply
    932.32x = 1,286.72 × 559.51
  4. Step 4: Simplify right side
    932.32x = 719,932.71
  5. Step 5: Solve for x
    x = 719,932.71/932.32
  6. Step 6: Final answer
    x = 772.19

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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.