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Finding the Third Proportional to 109.13 and 162.94

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Solution

The third proportional to 109.13 and 162.94 is: 243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.13 : 162.94 = 162.94 : x
  2. Step 2: Convert to fraction form
    109.13/162.94 = 162.94/x
  3. Step 3: Cross multiply
    109.13x = 162.94 × 162.94
  4. Step 4: Simplify right side
    109.13x = 26,548.63
  5. Step 5: Solve for x
    x = 26,548.63/109.13
  6. Step 6: Final answer
    x = 243.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.