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Finding the Fourth Proportional to 229.11, 343.46 and 113.48

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Solution

The fourth proportional to 229.11, 343.46 and 113.48 is: 170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.11 : 343.46 = 113.48 : x
  2. Step 2: Convert to fraction form
    229.11/343.46 = 113.48/x
  3. Step 3: Cross multiply
    229.11x = 343.46 × 113.48
  4. Step 4: Simplify right side
    229.11x = 38,975.84
  5. Step 5: Solve for x
    x = 38,975.84/229.11
  6. Step 6: Final answer
    x = 170.12

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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.