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Finding the Third Proportional to 148.31 and 229.19

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Solution

The third proportional to 148.31 and 229.19 is: 354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.31 : 229.19 = 229.19 : x
  2. Step 2: Convert to fraction form
    148.31/229.19 = 229.19/x
  3. Step 3: Cross multiply
    148.31x = 229.19 × 229.19
  4. Step 4: Simplify right side
    148.31x = 52,526.91
  5. Step 5: Solve for x
    x = 52,526.91/148.31
  6. Step 6: Final answer
    x = 354.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.