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Finding the Fourth Proportional to 514.96, 771.92 and 298.24

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Solution

The fourth proportional to 514.96, 771.92 and 298.24 is: 447.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.96 : 771.92 = 298.24 : x
  2. Step 2: Convert to fraction form
    514.96/771.92 = 298.24/x
  3. Step 3: Cross multiply
    514.96x = 771.92 × 298.24
  4. Step 4: Simplify right side
    514.96x = 230,217.42
  5. Step 5: Solve for x
    x = 230,217.42/514.96
  6. Step 6: Final answer
    x = 447.06

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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.