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Finding the Third Proportional to 209 and 223.50

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Solution

The third proportional to 209 and 223.50 is: 239.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209 : 223.50 = 223.50 : x
  2. Step 2: Convert to fraction form
    209/223.50 = 223.50/x
  3. Step 3: Cross multiply
    209x = 223.50 × 223.50
  4. Step 4: Simplify right side
    209x = 49,952.25
  5. Step 5: Solve for x
    x = 49,952.25/209
  6. Step 6: Final answer
    x = 239.01

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.