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Finding the Fourth Proportional to 516.44, 712.96 and 350.88

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Solution

The fourth proportional to 516.44, 712.96 and 350.88 is: 484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.44 : 712.96 = 350.88 : x
  2. Step 2: Convert to fraction form
    516.44/712.96 = 350.88/x
  3. Step 3: Cross multiply
    516.44x = 712.96 × 350.88
  4. Step 4: Simplify right side
    516.44x = 250,163.40
  5. Step 5: Solve for x
    x = 250,163.40/516.44
  6. Step 6: Final answer
    x = 484.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.