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Finding the Fourth Proportional to 247.13, 341.20 and 158.64

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Solution

The fourth proportional to 247.13, 341.20 and 158.64 is: 219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.13 : 341.20 = 158.64 : x
  2. Step 2: Convert to fraction form
    247.13/341.20 = 158.64/x
  3. Step 3: Cross multiply
    247.13x = 341.20 × 158.64
  4. Step 4: Simplify right side
    247.13x = 54,129.56
  5. Step 5: Solve for x
    x = 54,129.56/247.13
  6. Step 6: Final answer
    x = 219.03

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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.