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Finding the Fourth Proportional to 308.59, 462.89 and 92.32

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Solution

The fourth proportional to 308.59, 462.89 and 92.32 is: 138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.59 : 462.89 = 92.32 : x
  2. Step 2: Convert to fraction form
    308.59/462.89 = 92.32/x
  3. Step 3: Cross multiply
    308.59x = 462.89 × 92.32
  4. Step 4: Simplify right side
    308.59x = 42,733.54
  5. Step 5: Solve for x
    x = 42,733.54/308.59
  6. Step 6: Final answer
    x = 138.48

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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.