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Finding the Third Proportional to 209 and 366

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Solution

The third proportional to 209 and 366 is: 640.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209 : 366 = 366 : x
  2. Step 2: Convert to fraction form
    209/366 = 366/x
  3. Step 3: Cross multiply
    209x = 366 × 366
  4. Step 4: Simplify right side
    209x = 133,956
  5. Step 5: Solve for x
    x = 133,956/209
  6. Step 6: Final answer
    x = 640.94

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Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.