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Finding the Fourth Proportional to 269.09, 403.32 and 131.83

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Solution

The fourth proportional to 269.09, 403.32 and 131.83 is: 197.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.09 : 403.32 = 131.83 : x
  2. Step 2: Convert to fraction form
    269.09/403.32 = 131.83/x
  3. Step 3: Cross multiply
    269.09x = 403.32 × 131.83
  4. Step 4: Simplify right side
    269.09x = 53,169.68
  5. Step 5: Solve for x
    x = 53,169.68/269.09
  6. Step 6: Final answer
    x = 197.59

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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.