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Finding the Fourth Proportional to 625.77, 937.43 and 408.69

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Solution

The fourth proportional to 625.77, 937.43 and 408.69 is: 612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.77 : 937.43 = 408.69 : x
  2. Step 2: Convert to fraction form
    625.77/937.43 = 408.69/x
  3. Step 3: Cross multiply
    625.77x = 937.43 × 408.69
  4. Step 4: Simplify right side
    625.77x = 383,118.27
  5. Step 5: Solve for x
    x = 383,118.27/625.77
  6. Step 6: Final answer
    x = 612.23

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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.