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Finding the Fourth Proportional to 308.07, 462.17 and 125.55

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Solution

The fourth proportional to 308.07, 462.17 and 125.55 is: 188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.07 : 462.17 = 125.55 : x
  2. Step 2: Convert to fraction form
    308.07/462.17 = 125.55/x
  3. Step 3: Cross multiply
    308.07x = 462.17 × 125.55
  4. Step 4: Simplify right side
    308.07x = 58,025.76
  5. Step 5: Solve for x
    x = 58,025.76/308.07
  6. Step 6: Final answer
    x = 188.35

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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.