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Finding the Fourth Proportional to 373.94, 516.57 and 308.42

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Solution

The fourth proportional to 373.94, 516.57 and 308.42 is: 426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.94 : 516.57 = 308.42 : x
  2. Step 2: Convert to fraction form
    373.94/516.57 = 308.42/x
  3. Step 3: Cross multiply
    373.94x = 516.57 × 308.42
  4. Step 4: Simplify right side
    373.94x = 159,320.52
  5. Step 5: Solve for x
    x = 159,320.52/373.94
  6. Step 6: Final answer
    x = 426.06

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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.