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Finding the Fourth Proportional to 553.01, 763.14 and 331.97

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Solution

The fourth proportional to 553.01, 763.14 and 331.97 is: 458.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.01 : 763.14 = 331.97 : x
  2. Step 2: Convert to fraction form
    553.01/763.14 = 331.97/x
  3. Step 3: Cross multiply
    553.01x = 763.14 × 331.97
  4. Step 4: Simplify right side
    553.01x = 253,339.59
  5. Step 5: Solve for x
    x = 253,339.59/553.01
  6. Step 6: Final answer
    x = 458.11

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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.