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Finding the Fourth Proportional to 376.38, 516.24 and 355.46

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Solution

The fourth proportional to 376.38, 516.24 and 355.46 is: 487.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.38 : 516.24 = 355.46 : x
  2. Step 2: Convert to fraction form
    376.38/516.24 = 355.46/x
  3. Step 3: Cross multiply
    376.38x = 516.24 × 355.46
  4. Step 4: Simplify right side
    376.38x = 183,500.09
  5. Step 5: Solve for x
    x = 183,500.09/376.38
  6. Step 6: Final answer
    x = 487.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.