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Finding the Fourth Proportional to 627.70, 937.87 and 627.70

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Solution

The fourth proportional to 627.70, 937.87 and 627.70 is: 937.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.70 : 937.87 = 627.70 : x
  2. Step 2: Convert to fraction form
    627.70/937.87 = 627.70/x
  3. Step 3: Cross multiply
    627.70x = 937.87 × 627.70
  4. Step 4: Simplify right side
    627.70x = 588,697.86
  5. Step 5: Solve for x
    x = 588,697.86/627.70
  6. Step 6: Final answer
    x = 937.87

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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.