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Finding the Fourth Proportional to 311.21, 466.82 and 175.12

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Solution

The fourth proportional to 311.21, 466.82 and 175.12 is: 262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.21 : 466.82 = 175.12 : x
  2. Step 2: Convert to fraction form
    311.21/466.82 = 175.12/x
  3. Step 3: Cross multiply
    311.21x = 466.82 × 175.12
  4. Step 4: Simplify right side
    311.21x = 81,749.52
  5. Step 5: Solve for x
    x = 81,749.52/311.21
  6. Step 6: Final answer
    x = 262.68

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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.