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Finding the Fourth Proportional to 625.32, 936.96 and 442.32

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Solution

The fourth proportional to 625.32, 936.96 and 442.32 is: 662.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.32 : 936.96 = 442.32 : x
  2. Step 2: Convert to fraction form
    625.32/936.96 = 442.32/x
  3. Step 3: Cross multiply
    625.32x = 936.96 × 442.32
  4. Step 4: Simplify right side
    625.32x = 414,436.15
  5. Step 5: Solve for x
    x = 414,436.15/625.32
  6. Step 6: Final answer
    x = 662.76

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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.