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Finding the Fourth Proportional to 527.31, 792.18 and 311.04

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Solution

The fourth proportional to 527.31, 792.18 and 311.04 is: 467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.31 : 792.18 = 311.04 : x
  2. Step 2: Convert to fraction form
    527.31/792.18 = 311.04/x
  3. Step 3: Cross multiply
    527.31x = 792.18 × 311.04
  4. Step 4: Simplify right side
    527.31x = 246,399.67
  5. Step 5: Solve for x
    x = 246,399.67/527.31
  6. Step 6: Final answer
    x = 467.28

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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.