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Finding the Fourth Proportional to 415.97, 624.10 and 277.70

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Solution

The fourth proportional to 415.97, 624.10 and 277.70 is: 416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.97 : 624.10 = 277.70 : x
  2. Step 2: Convert to fraction form
    415.97/624.10 = 277.70/x
  3. Step 3: Cross multiply
    415.97x = 624.10 × 277.70
  4. Step 4: Simplify right side
    415.97x = 173,312.57
  5. Step 5: Solve for x
    x = 173,312.57/415.97
  6. Step 6: Final answer
    x = 416.65

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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.