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Finding the Fourth Proportional to 424.32, 585.44 and 269.12

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Solution

The fourth proportional to 424.32, 585.44 and 269.12 is: 371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.32 : 585.44 = 269.12 : x
  2. Step 2: Convert to fraction form
    424.32/585.44 = 269.12/x
  3. Step 3: Cross multiply
    424.32x = 585.44 × 269.12
  4. Step 4: Simplify right side
    424.32x = 157,553.61
  5. Step 5: Solve for x
    x = 157,553.61/424.32
  6. Step 6: Final answer
    x = 371.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.