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Finding the Fourth Proportional to 411.35, 616.64 and 151.29

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Solution

The fourth proportional to 411.35, 616.64 and 151.29 is: 226.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.35 : 616.64 = 151.29 : x
  2. Step 2: Convert to fraction form
    411.35/616.64 = 151.29/x
  3. Step 3: Cross multiply
    411.35x = 616.64 × 151.29
  4. Step 4: Simplify right side
    411.35x = 93,291.47
  5. Step 5: Solve for x
    x = 93,291.47/411.35
  6. Step 6: Final answer
    x = 226.79

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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.