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Finding the Fourth Proportional to 311.70, 466.98 and 262.97

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Solution

The fourth proportional to 311.70, 466.98 and 262.97 is: 393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.70 : 466.98 = 262.97 : x
  2. Step 2: Convert to fraction form
    311.70/466.98 = 262.97/x
  3. Step 3: Cross multiply
    311.70x = 466.98 × 262.97
  4. Step 4: Simplify right side
    311.70x = 122,801.73
  5. Step 5: Solve for x
    x = 122,801.73/311.70
  6. Step 6: Final answer
    x = 393.97

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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.