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Finding the Third Proportional to 266.81 and 424.69

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Solution

The third proportional to 266.81 and 424.69 is: 675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.81 : 424.69 = 424.69 : x
  2. Step 2: Convert to fraction form
    266.81/424.69 = 424.69/x
  3. Step 3: Cross multiply
    266.81x = 424.69 × 424.69
  4. Step 4: Simplify right side
    266.81x = 180,359.47
  5. Step 5: Solve for x
    x = 180,359.47/266.81
  6. Step 6: Final answer
    x = 675.98

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.