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Finding the Fourth Proportional to 269.31, 404.07 and 228.81

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Solution

The fourth proportional to 269.31, 404.07 and 228.81 is: 343.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.31 : 404.07 = 228.81 : x
  2. Step 2: Convert to fraction form
    269.31/404.07 = 228.81/x
  3. Step 3: Cross multiply
    269.31x = 404.07 × 228.81
  4. Step 4: Simplify right side
    269.31x = 92,455.26
  5. Step 5: Solve for x
    x = 92,455.26/269.31
  6. Step 6: Final answer
    x = 343.30

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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.