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Finding the Fourth Proportional to 626.42, 938.27 and 528.68

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Solution

The fourth proportional to 626.42, 938.27 and 528.68 is: 791.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.42 : 938.27 = 528.68 : x
  2. Step 2: Convert to fraction form
    626.42/938.27 = 528.68/x
  3. Step 3: Cross multiply
    626.42x = 938.27 × 528.68
  4. Step 4: Simplify right side
    626.42x = 496,037.25
  5. Step 5: Solve for x
    x = 496,037.25/626.42
  6. Step 6: Final answer
    x = 791.87

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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.