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Finding the Fourth Proportional to 625.95, 939.24 and 480.63

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Solution

The fourth proportional to 625.95, 939.24 and 480.63 is: 721.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.95 : 939.24 = 480.63 : x
  2. Step 2: Convert to fraction form
    625.95/939.24 = 480.63/x
  3. Step 3: Cross multiply
    625.95x = 939.24 × 480.63
  4. Step 4: Simplify right side
    625.95x = 451,426.92
  5. Step 5: Solve for x
    x = 451,426.92/625.95
  6. Step 6: Final answer
    x = 721.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.