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Finding the Fourth Proportional to 442.56, 663.46 and 237.28

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Solution

The fourth proportional to 442.56, 663.46 and 237.28 is: 355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.56 : 663.46 = 237.28 : x
  2. Step 2: Convert to fraction form
    442.56/663.46 = 237.28/x
  3. Step 3: Cross multiply
    442.56x = 663.46 × 237.28
  4. Step 4: Simplify right side
    442.56x = 157,425.79
  5. Step 5: Solve for x
    x = 157,425.79/442.56
  6. Step 6: Final answer
    x = 355.72

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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.