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Finding the Fourth Proportional to 266.33, 397.23 and 249.79

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Solution

The fourth proportional to 266.33, 397.23 and 249.79 is: 372.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.33 : 397.23 = 249.79 : x
  2. Step 2: Convert to fraction form
    266.33/397.23 = 249.79/x
  3. Step 3: Cross multiply
    266.33x = 397.23 × 249.79
  4. Step 4: Simplify right side
    266.33x = 99,224.08
  5. Step 5: Solve for x
    x = 99,224.08/266.33
  6. Step 6: Final answer
    x = 372.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.