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Finding the Fourth Proportional to 625.91, 934.38 and 543.92

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Solution

The fourth proportional to 625.91, 934.38 and 543.92 is: 811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.91 : 934.38 = 543.92 : x
  2. Step 2: Convert to fraction form
    625.91/934.38 = 543.92/x
  3. Step 3: Cross multiply
    625.91x = 934.38 × 543.92
  4. Step 4: Simplify right side
    625.91x = 508,223.30
  5. Step 5: Solve for x
    x = 508,223.30/625.91
  6. Step 6: Final answer
    x = 811.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.