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Finding the Fourth Proportional to 308.71, 462.75 and 126.10

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Solution

The fourth proportional to 308.71, 462.75 and 126.10 is: 189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.71 : 462.75 = 126.10 : x
  2. Step 2: Convert to fraction form
    308.71/462.75 = 126.10/x
  3. Step 3: Cross multiply
    308.71x = 462.75 × 126.10
  4. Step 4: Simplify right side
    308.71x = 58,352.78
  5. Step 5: Solve for x
    x = 58,352.78/308.71
  6. Step 6: Final answer
    x = 189.02

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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.