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Finding the Fourth Proportional to 547.53, 819.69 and 425.90

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Solution

The fourth proportional to 547.53, 819.69 and 425.90 is: 637.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.53 : 819.69 = 425.90 : x
  2. Step 2: Convert to fraction form
    547.53/819.69 = 425.90/x
  3. Step 3: Cross multiply
    547.53x = 819.69 × 425.90
  4. Step 4: Simplify right side
    547.53x = 349,101.87
  5. Step 5: Solve for x
    x = 349,101.87/547.53
  6. Step 6: Final answer
    x = 637.59

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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.