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Finding the Fourth Proportional to 416.69, 574.85 and 269.38

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Solution

The fourth proportional to 416.69, 574.85 and 269.38 is: 371.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.69 : 574.85 = 269.38 : x
  2. Step 2: Convert to fraction form
    416.69/574.85 = 269.38/x
  3. Step 3: Cross multiply
    416.69x = 574.85 × 269.38
  4. Step 4: Simplify right side
    416.69x = 154,849.74
  5. Step 5: Solve for x
    x = 154,849.74/416.69
  6. Step 6: Final answer
    x = 371.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.