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Finding the Fourth Proportional to 442.31, 663.17 and 236.97

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Solution

The fourth proportional to 442.31, 663.17 and 236.97 is: 355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.31 : 663.17 = 236.97 : x
  2. Step 2: Convert to fraction form
    442.31/663.17 = 236.97/x
  3. Step 3: Cross multiply
    442.31x = 663.17 × 236.97
  4. Step 4: Simplify right side
    442.31x = 157,150.21
  5. Step 5: Solve for x
    x = 157,150.21/442.31
  6. Step 6: Final answer
    x = 355.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.