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Finding the Fourth Proportional to 311.38, 466.63 and 242.60

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Solution

The fourth proportional to 311.38, 466.63 and 242.60 is: 363.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.38 : 466.63 = 242.60 : x
  2. Step 2: Convert to fraction form
    311.38/466.63 = 242.60/x
  3. Step 3: Cross multiply
    311.38x = 466.63 × 242.60
  4. Step 4: Simplify right side
    311.38x = 113,201.50
  5. Step 5: Solve for x
    x = 113,201.50/311.38
  6. Step 6: Final answer
    x = 363.55

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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.