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Finding the Fourth Proportional to 269.84, 404.79 and 96.47

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Solution

The fourth proportional to 269.84, 404.79 and 96.47 is: 144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.84 : 404.79 = 96.47 : x
  2. Step 2: Convert to fraction form
    269.84/404.79 = 96.47/x
  3. Step 3: Cross multiply
    269.84x = 404.79 × 96.47
  4. Step 4: Simplify right side
    269.84x = 39,048.07
  5. Step 5: Solve for x
    x = 39,048.07/269.84
  6. Step 6: Final answer
    x = 144.71

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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.