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Finding the Fourth Proportional to 626.02, 938.10 and 557.68

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Solution

The fourth proportional to 626.02, 938.10 and 557.68 is: 835.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.02 : 938.10 = 557.68 : x
  2. Step 2: Convert to fraction form
    626.02/938.10 = 557.68/x
  3. Step 3: Cross multiply
    626.02x = 938.10 × 557.68
  4. Step 4: Simplify right side
    626.02x = 523,159.61
  5. Step 5: Solve for x
    x = 523,159.61/626.02
  6. Step 6: Final answer
    x = 835.69

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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.