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Finding the Third Proportional to 208.69 and 366.75

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Solution

The third proportional to 208.69 and 366.75 is: 644.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.69 : 366.75 = 366.75 : x
  2. Step 2: Convert to fraction form
    208.69/366.75 = 366.75/x
  3. Step 3: Cross multiply
    208.69x = 366.75 × 366.75
  4. Step 4: Simplify right side
    208.69x = 134,505.56
  5. Step 5: Solve for x
    x = 134,505.56/208.69
  6. Step 6: Final answer
    x = 644.53

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.