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Finding the Fourth Proportional to 269.33, 404.67 and 171.87

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Solution

The fourth proportional to 269.33, 404.67 and 171.87 is: 258.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.33 : 404.67 = 171.87 : x
  2. Step 2: Convert to fraction form
    269.33/404.67 = 171.87/x
  3. Step 3: Cross multiply
    269.33x = 404.67 × 171.87
  4. Step 4: Simplify right side
    269.33x = 69,550.63
  5. Step 5: Solve for x
    x = 69,550.63/269.33
  6. Step 6: Final answer
    x = 258.24

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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.