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Finding the Fourth Proportional to 701.62, 1,052.76 and 311.56

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Solution

The fourth proportional to 701.62, 1,052.76 and 311.56 is: 467.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.62 : 1,052.76 = 311.56 : x
  2. Step 2: Convert to fraction form
    701.62/1,052.76 = 311.56/x
  3. Step 3: Cross multiply
    701.62x = 1,052.76 × 311.56
  4. Step 4: Simplify right side
    701.62x = 327,997.91
  5. Step 5: Solve for x
    x = 327,997.91/701.62
  6. Step 6: Final answer
    x = 467.49

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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.