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Finding the Fourth Proportional to 627.40, 939.96 and 529.94

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Solution

The fourth proportional to 627.40, 939.96 and 529.94 is: 793.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.40 : 939.96 = 529.94 : x
  2. Step 2: Convert to fraction form
    627.40/939.96 = 529.94/x
  3. Step 3: Cross multiply
    627.40x = 939.96 × 529.94
  4. Step 4: Simplify right side
    627.40x = 498,122.40
  5. Step 5: Solve for x
    x = 498,122.40/627.40
  6. Step 6: Final answer
    x = 793.95

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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.