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Finding the Fourth Proportional to 227.62, 340.47 and 140.74

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Solution

The fourth proportional to 227.62, 340.47 and 140.74 is: 210.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.62 : 340.47 = 140.74 : x
  2. Step 2: Convert to fraction form
    227.62/340.47 = 140.74/x
  3. Step 3: Cross multiply
    227.62x = 340.47 × 140.74
  4. Step 4: Simplify right side
    227.62x = 47,917.75
  5. Step 5: Solve for x
    x = 47,917.75/227.62
  6. Step 6: Final answer
    x = 210.52

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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.