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Finding the Third Proportional to 120.38 and 248.34

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Solution

The third proportional to 120.38 and 248.34 is: 512.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.38 : 248.34 = 248.34 : x
  2. Step 2: Convert to fraction form
    120.38/248.34 = 248.34/x
  3. Step 3: Cross multiply
    120.38x = 248.34 × 248.34
  4. Step 4: Simplify right side
    120.38x = 61,674.62
  5. Step 5: Solve for x
    x = 61,674.62/120.38
  6. Step 6: Final answer
    x = 512.35

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.