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Finding the Fourth Proportional to 353.86, 487.65 and 250.18

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Solution

The fourth proportional to 353.86, 487.65 and 250.18 is: 344.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.86 : 487.65 = 250.18 : x
  2. Step 2: Convert to fraction form
    353.86/487.65 = 250.18/x
  3. Step 3: Cross multiply
    353.86x = 487.65 × 250.18
  4. Step 4: Simplify right side
    353.86x = 122,000.28
  5. Step 5: Solve for x
    x = 122,000.28/353.86
  6. Step 6: Final answer
    x = 344.77

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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.