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Finding the Fourth Proportional to 247.20, 341.25 and 159.93

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Solution

The fourth proportional to 247.20, 341.25 and 159.93 is: 220.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.20 : 341.25 = 159.93 : x
  2. Step 2: Convert to fraction form
    247.20/341.25 = 159.93/x
  3. Step 3: Cross multiply
    247.20x = 341.25 × 159.93
  4. Step 4: Simplify right side
    247.20x = 54,576.11
  5. Step 5: Solve for x
    x = 54,576.11/247.20
  6. Step 6: Final answer
    x = 220.78

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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.