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Finding the Fourth Proportional to 374.27, 516.92 and 308.05

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Solution

The fourth proportional to 374.27, 516.92 and 308.05 is: 425.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.27 : 516.92 = 308.05 : x
  2. Step 2: Convert to fraction form
    374.27/516.92 = 308.05/x
  3. Step 3: Cross multiply
    374.27x = 516.92 × 308.05
  4. Step 4: Simplify right side
    374.27x = 159,234.37
  5. Step 5: Solve for x
    x = 159,234.37/374.27
  6. Step 6: Final answer
    x = 425.46

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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.