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Finding the Fourth Proportional to 311, 466.38 and 105.52

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Solution

The fourth proportional to 311, 466.38 and 105.52 is: 158.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    311 : 466.38 = 105.52 : x
  2. Step 2: Convert to fraction form
    311/466.38 = 105.52/x
  3. Step 3: Cross multiply
    311x = 466.38 × 105.52
  4. Step 4: Simplify right side
    311x = 49,212.42
  5. Step 5: Solve for x
    x = 49,212.42/311
  6. Step 6: Final answer
    x = 158.24

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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.