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Finding the Fourth Proportional to 624.72, 936.17 and 442.47

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Solution

The fourth proportional to 624.72, 936.17 and 442.47 is: 663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.72 : 936.17 = 442.47 : x
  2. Step 2: Convert to fraction form
    624.72/936.17 = 442.47/x
  3. Step 3: Cross multiply
    624.72x = 936.17 × 442.47
  4. Step 4: Simplify right side
    624.72x = 414,227.14
  5. Step 5: Solve for x
    x = 414,227.14/624.72
  6. Step 6: Final answer
    x = 663.06

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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.