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Finding the Fourth Proportional to 634.86, 876.19 and 372.88

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Solution

The fourth proportional to 634.86, 876.19 and 372.88 is: 514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.86 : 876.19 = 372.88 : x
  2. Step 2: Convert to fraction form
    634.86/876.19 = 372.88/x
  3. Step 3: Cross multiply
    634.86x = 876.19 × 372.88
  4. Step 4: Simplify right side
    634.86x = 326,713.73
  5. Step 5: Solve for x
    x = 326,713.73/634.86
  6. Step 6: Final answer
    x = 514.62

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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.