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Finding the Fourth Proportional to 627.57, 866.05 and 343.99

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Solution

The fourth proportional to 627.57, 866.05 and 343.99 is: 474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.57 : 866.05 = 343.99 : x
  2. Step 2: Convert to fraction form
    627.57/866.05 = 343.99/x
  3. Step 3: Cross multiply
    627.57x = 866.05 × 343.99
  4. Step 4: Simplify right side
    627.57x = 297,912.97
  5. Step 5: Solve for x
    x = 297,912.97/627.57
  6. Step 6: Final answer
    x = 474.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.