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Finding the Fourth Proportional to 527.16, 726.66 and 402.42

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Solution

The fourth proportional to 527.16, 726.66 and 402.42 is: 554.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.16 : 726.66 = 402.42 : x
  2. Step 2: Convert to fraction form
    527.16/726.66 = 402.42/x
  3. Step 3: Cross multiply
    527.16x = 726.66 × 402.42
  4. Step 4: Simplify right side
    527.16x = 292,422.52
  5. Step 5: Solve for x
    x = 292,422.52/527.16
  6. Step 6: Final answer
    x = 554.71

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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.