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Finding the Fourth Proportional to 634.74, 876.15 and 372.75

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Solution

The fourth proportional to 634.74, 876.15 and 372.75 is: 514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.74 : 876.15 = 372.75 : x
  2. Step 2: Convert to fraction form
    634.74/876.15 = 372.75/x
  3. Step 3: Cross multiply
    634.74x = 876.15 × 372.75
  4. Step 4: Simplify right side
    634.74x = 326,584.91
  5. Step 5: Solve for x
    x = 326,584.91/634.74
  6. Step 6: Final answer
    x = 514.52

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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.