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Finding the Fourth Proportional to 247.17, 341.21 and 168.90

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Solution

The fourth proportional to 247.17, 341.21 and 168.90 is: 233.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.17 : 341.21 = 168.90 : x
  2. Step 2: Convert to fraction form
    247.17/341.21 = 168.90/x
  3. Step 3: Cross multiply
    247.17x = 341.21 × 168.90
  4. Step 4: Simplify right side
    247.17x = 57,629.52
  5. Step 5: Solve for x
    x = 57,629.52/247.17
  6. Step 6: Final answer
    x = 233.16

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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.