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Finding the Third Proportional to 109 and 185.25

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Solution

The third proportional to 109 and 185.25 is: 314.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109 : 185.25 = 185.25 : x
  2. Step 2: Convert to fraction form
    109/185.25 = 185.25/x
  3. Step 3: Cross multiply
    109x = 185.25 × 185.25
  4. Step 4: Simplify right side
    109x = 34,317.56
  5. Step 5: Solve for x
    x = 34,317.56/109
  6. Step 6: Final answer
    x = 314.84

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.