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Finding the Fourth Proportional to 247.96, 342.29 and 159.47

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Solution

The fourth proportional to 247.96, 342.29 and 159.47 is: 220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.96 : 342.29 = 159.47 : x
  2. Step 2: Convert to fraction form
    247.96/342.29 = 159.47/x
  3. Step 3: Cross multiply
    247.96x = 342.29 × 159.47
  4. Step 4: Simplify right side
    247.96x = 54,584.96
  5. Step 5: Solve for x
    x = 54,584.96/247.96
  6. Step 6: Final answer
    x = 220.14

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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.