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Finding the Fourth Proportional to 353.77, 487.62 and 248.97

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Solution

The fourth proportional to 353.77, 487.62 and 248.97 is: 343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.77 : 487.62 = 248.97 : x
  2. Step 2: Convert to fraction form
    353.77/487.62 = 248.97/x
  3. Step 3: Cross multiply
    353.77x = 487.62 × 248.97
  4. Step 4: Simplify right side
    353.77x = 121,404.58
  5. Step 5: Solve for x
    x = 121,404.58/353.77
  6. Step 6: Final answer
    x = 343.18

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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.