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Finding the Fourth Proportional to 625.13, 862.55 and 459.49

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Solution

The fourth proportional to 625.13, 862.55 and 459.49 is: 634.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.13 : 862.55 = 459.49 : x
  2. Step 2: Convert to fraction form
    625.13/862.55 = 459.49/x
  3. Step 3: Cross multiply
    625.13x = 862.55 × 459.49
  4. Step 4: Simplify right side
    625.13x = 396,329.94
  5. Step 5: Solve for x
    x = 396,329.94/625.13
  6. Step 6: Final answer
    x = 634.00

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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.