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Finding the Fourth Proportional to 512.97, 769.67 and 269.65

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Solution

The fourth proportional to 512.97, 769.67 and 269.65 is: 404.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.97 : 769.67 = 269.65 : x
  2. Step 2: Convert to fraction form
    512.97/769.67 = 269.65/x
  3. Step 3: Cross multiply
    512.97x = 769.67 × 269.65
  4. Step 4: Simplify right side
    512.97x = 207,541.52
  5. Step 5: Solve for x
    x = 207,541.52/512.97
  6. Step 6: Final answer
    x = 404.59

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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.