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Finding the Third Proportional to 186.50 and 209

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Solution

The third proportional to 186.50 and 209 is: 234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.50 : 209 = 209 : x
  2. Step 2: Convert to fraction form
    186.50/209 = 209/x
  3. Step 3: Cross multiply
    186.50x = 209 × 209
  4. Step 4: Simplify right side
    186.50x = 43,681
  5. Step 5: Solve for x
    x = 43,681/186.50
  6. Step 6: Final answer
    x = 234.21

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.