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Finding the Fourth Proportional to 229.05, 315.97 and 140.49

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Solution

The fourth proportional to 229.05, 315.97 and 140.49 is: 193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.05 : 315.97 = 140.49 : x
  2. Step 2: Convert to fraction form
    229.05/315.97 = 140.49/x
  3. Step 3: Cross multiply
    229.05x = 315.97 × 140.49
  4. Step 4: Simplify right side
    229.05x = 44,390.27
  5. Step 5: Solve for x
    x = 44,390.27/229.05
  6. Step 6: Final answer
    x = 193.80

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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.