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Finding the Third Proportional to 266.44 and 414.47

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Solution

The third proportional to 266.44 and 414.47 is: 644.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.44 : 414.47 = 414.47 : x
  2. Step 2: Convert to fraction form
    266.44/414.47 = 414.47/x
  3. Step 3: Cross multiply
    266.44x = 414.47 × 414.47
  4. Step 4: Simplify right side
    266.44x = 171,784.34
  5. Step 5: Solve for x
    x = 171,784.34/266.44
  6. Step 6: Final answer
    x = 644.75

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.