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Finding the Third Proportional to 122.19 and 230.13

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Solution

The third proportional to 122.19 and 230.13 is: 433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.19 : 230.13 = 230.13 : x
  2. Step 2: Convert to fraction form
    122.19/230.13 = 230.13/x
  3. Step 3: Cross multiply
    122.19x = 230.13 × 230.13
  4. Step 4: Simplify right side
    122.19x = 52,961.11
  5. Step 5: Solve for x
    x = 52,961.11/122.19
  6. Step 6: Final answer
    x = 433.45

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.