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Finding the Fourth Proportional to 633.92, 878.52 and 625.11

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Solution

The fourth proportional to 633.92, 878.52 and 625.11 is: 866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.92 : 878.52 = 625.11 : x
  2. Step 2: Convert to fraction form
    633.92/878.52 = 625.11/x
  3. Step 3: Cross multiply
    633.92x = 878.52 × 625.11
  4. Step 4: Simplify right side
    633.92x = 549,171.64
  5. Step 5: Solve for x
    x = 549,171.64/633.92
  6. Step 6: Final answer
    x = 866.31

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.