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Finding the Fourth Proportional to 511.92, 767.20 and 186.97

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Solution

The fourth proportional to 511.92, 767.20 and 186.97 is: 280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.92 : 767.20 = 186.97 : x
  2. Step 2: Convert to fraction form
    511.92/767.20 = 186.97/x
  3. Step 3: Cross multiply
    511.92x = 767.20 × 186.97
  4. Step 4: Simplify right side
    511.92x = 143,442.92
  5. Step 5: Solve for x
    x = 143,442.92/511.92
  6. Step 6: Final answer
    x = 280.21

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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.