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Finding the Fourth Proportional to 625.31, 863.03 and 459.44

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Solution

The fourth proportional to 625.31, 863.03 and 459.44 is: 634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.31 : 863.03 = 459.44 : x
  2. Step 2: Convert to fraction form
    625.31/863.03 = 459.44/x
  3. Step 3: Cross multiply
    625.31x = 863.03 × 459.44
  4. Step 4: Simplify right side
    625.31x = 396,510.50
  5. Step 5: Solve for x
    x = 396,510.50/625.31
  6. Step 6: Final answer
    x = 634.10

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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.