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Finding the Fourth Proportional to 308.74, 462.94 and 126.27

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Solution

The fourth proportional to 308.74, 462.94 and 126.27 is: 189.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.74 : 462.94 = 126.27 : x
  2. Step 2: Convert to fraction form
    308.74/462.94 = 126.27/x
  3. Step 3: Cross multiply
    308.74x = 462.94 × 126.27
  4. Step 4: Simplify right side
    308.74x = 58,453.59
  5. Step 5: Solve for x
    x = 58,453.59/308.74
  6. Step 6: Final answer
    x = 189.33

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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.