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Finding the Fourth Proportional to 636.31, 876.02 and 547.46

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Solution

The fourth proportional to 636.31, 876.02 and 547.46 is: 753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.31 : 876.02 = 547.46 : x
  2. Step 2: Convert to fraction form
    636.31/876.02 = 547.46/x
  3. Step 3: Cross multiply
    636.31x = 876.02 × 547.46
  4. Step 4: Simplify right side
    636.31x = 479,582.08
  5. Step 5: Solve for x
    x = 479,582.08/636.31
  6. Step 6: Final answer
    x = 753.70

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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.