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Finding the Fourth Proportional to 227.15, 341.23 and 140.55

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Solution

The fourth proportional to 227.15, 341.23 and 140.55 is: 211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.15 : 341.23 = 140.55 : x
  2. Step 2: Convert to fraction form
    227.15/341.23 = 140.55/x
  3. Step 3: Cross multiply
    227.15x = 341.23 × 140.55
  4. Step 4: Simplify right side
    227.15x = 47,959.88
  5. Step 5: Solve for x
    x = 47,959.88/227.15
  6. Step 6: Final answer
    x = 211.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.