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Finding the Fourth Proportional to 634.11, 875.16 and 372.21

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Solution

The fourth proportional to 634.11, 875.16 and 372.21 is: 513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.11 : 875.16 = 372.21 : x
  2. Step 2: Convert to fraction form
    634.11/875.16 = 372.21/x
  3. Step 3: Cross multiply
    634.11x = 875.16 × 372.21
  4. Step 4: Simplify right side
    634.11x = 325,743.30
  5. Step 5: Solve for x
    x = 325,743.30/634.11
  6. Step 6: Final answer
    x = 513.70

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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.