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Finding the Third Proportional to 109.69 and 149.06

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Solution

The third proportional to 109.69 and 149.06 is: 202.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.69 : 149.06 = 149.06 : x
  2. Step 2: Convert to fraction form
    109.69/149.06 = 149.06/x
  3. Step 3: Cross multiply
    109.69x = 149.06 × 149.06
  4. Step 4: Simplify right side
    109.69x = 22,219.63
  5. Step 5: Solve for x
    x = 22,219.63/109.69
  6. Step 6: Final answer
    x = 202.57

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.