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Finding the Fourth Proportional to 247.60, 341.85 and 159.12

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Solution

The fourth proportional to 247.60, 341.85 and 159.12 is: 219.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.60 : 341.85 = 159.12 : x
  2. Step 2: Convert to fraction form
    247.60/341.85 = 159.12/x
  3. Step 3: Cross multiply
    247.60x = 341.85 × 159.12
  4. Step 4: Simplify right side
    247.60x = 54,396.26
  5. Step 5: Solve for x
    x = 54,396.26/247.60
  6. Step 6: Final answer
    x = 219.69

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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.