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Finding the Fourth Proportional to 484.82, 725.84 and 411.60

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Solution

The fourth proportional to 484.82, 725.84 and 411.60 is: 616.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.82 : 725.84 = 411.60 : x
  2. Step 2: Convert to fraction form
    484.82/725.84 = 411.60/x
  3. Step 3: Cross multiply
    484.82x = 725.84 × 411.60
  4. Step 4: Simplify right side
    484.82x = 298,753.69
  5. Step 5: Solve for x
    x = 298,753.69/484.82
  6. Step 6: Final answer
    x = 616.22

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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.