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Finding the Third Proportional to 266.50 and 274.50

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Solution

The third proportional to 266.50 and 274.50 is: 282.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.50 : 274.50 = 274.50 : x
  2. Step 2: Convert to fraction form
    266.50/274.50 = 274.50/x
  3. Step 3: Cross multiply
    266.50x = 274.50 × 274.50
  4. Step 4: Simplify right side
    266.50x = 75,350.25
  5. Step 5: Solve for x
    x = 75,350.25/266.50
  6. Step 6: Final answer
    x = 282.74

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Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.