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Finding the Fourth Proportional to 354.29, 488.39 and 249.03

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Solution

The fourth proportional to 354.29, 488.39 and 249.03 is: 343.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.29 : 488.39 = 249.03 : x
  2. Step 2: Convert to fraction form
    354.29/488.39 = 249.03/x
  3. Step 3: Cross multiply
    354.29x = 488.39 × 249.03
  4. Step 4: Simplify right side
    354.29x = 121,622.52
  5. Step 5: Solve for x
    x = 121,622.52/354.29
  6. Step 6: Final answer
    x = 343.29

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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.