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Finding the Fourth Proportional to 311.11, 466.70 and 105.62

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Solution

The fourth proportional to 311.11, 466.70 and 105.62 is: 158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.11 : 466.70 = 105.62 : x
  2. Step 2: Convert to fraction form
    311.11/466.70 = 105.62/x
  3. Step 3: Cross multiply
    311.11x = 466.70 × 105.62
  4. Step 4: Simplify right side
    311.11x = 49,293.88
  5. Step 5: Solve for x
    x = 49,293.88/311.11
  6. Step 6: Final answer
    x = 158.45

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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.