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Finding the Fourth Proportional to 269.32, 404.26 and 208.36

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Solution

The fourth proportional to 269.32, 404.26 and 208.36 is: 312.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.32 : 404.26 = 208.36 : x
  2. Step 2: Convert to fraction form
    269.32/404.26 = 208.36/x
  3. Step 3: Cross multiply
    269.32x = 404.26 × 208.36
  4. Step 4: Simplify right side
    269.32x = 84,231.61
  5. Step 5: Solve for x
    x = 84,231.61/269.32
  6. Step 6: Final answer
    x = 312.76

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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.