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Finding the Fourth Proportional to 266.41, 398.84 and 240.79

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Solution

The fourth proportional to 266.41, 398.84 and 240.79 is: 360.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.41 : 398.84 = 240.79 : x
  2. Step 2: Convert to fraction form
    266.41/398.84 = 240.79/x
  3. Step 3: Cross multiply
    266.41x = 398.84 × 240.79
  4. Step 4: Simplify right side
    266.41x = 96,034.48
  5. Step 5: Solve for x
    x = 96,034.48/266.41
  6. Step 6: Final answer
    x = 360.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.