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Finding the Fourth Proportional to 308.43, 462.86 and 123.32

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Solution

The fourth proportional to 308.43, 462.86 and 123.32 is: 185.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.43 : 462.86 = 123.32 : x
  2. Step 2: Convert to fraction form
    308.43/462.86 = 123.32/x
  3. Step 3: Cross multiply
    308.43x = 462.86 × 123.32
  4. Step 4: Simplify right side
    308.43x = 57,077.54
  5. Step 5: Solve for x
    x = 57,077.54/308.43
  6. Step 6: Final answer
    x = 185.06

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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.