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Finding the Fourth Proportional to 634.28, 875.31 and 372.35

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Solution

The fourth proportional to 634.28, 875.31 and 372.35 is: 513.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.28 : 875.31 = 372.35 : x
  2. Step 2: Convert to fraction form
    634.28/875.31 = 372.35/x
  3. Step 3: Cross multiply
    634.28x = 875.31 × 372.35
  4. Step 4: Simplify right side
    634.28x = 325,921.68
  5. Step 5: Solve for x
    x = 325,921.68/634.28
  6. Step 6: Final answer
    x = 513.85

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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.