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Finding the Fourth Proportional to 627.17, 940.76 and 297.91

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Solution

The fourth proportional to 627.17, 940.76 and 297.91 is: 446.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.17 : 940.76 = 297.91 : x
  2. Step 2: Convert to fraction form
    627.17/940.76 = 297.91/x
  3. Step 3: Cross multiply
    627.17x = 940.76 × 297.91
  4. Step 4: Simplify right side
    627.17x = 280,255.62
  5. Step 5: Solve for x
    x = 280,255.62/627.17
  6. Step 6: Final answer
    x = 446.86

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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.