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Finding the Fourth Proportional to 514.64, 771.53 and 331.49

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Solution

The fourth proportional to 514.64, 771.53 and 331.49 is: 496.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.64 : 771.53 = 331.49 : x
  2. Step 2: Convert to fraction form
    514.64/771.53 = 331.49/x
  3. Step 3: Cross multiply
    514.64x = 771.53 × 331.49
  4. Step 4: Simplify right side
    514.64x = 255,754.75
  5. Step 5: Solve for x
    x = 255,754.75/514.64
  6. Step 6: Final answer
    x = 496.96

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Double scale
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Similar ratio
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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.