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Finding the Fourth Proportional to 308.43, 425.67 and 177.45

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Solution

The fourth proportional to 308.43, 425.67 and 177.45 is: 244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.43 : 425.67 = 177.45 : x
  2. Step 2: Convert to fraction form
    308.43/425.67 = 177.45/x
  3. Step 3: Cross multiply
    308.43x = 425.67 × 177.45
  4. Step 4: Simplify right side
    308.43x = 75,535.14
  5. Step 5: Solve for x
    x = 75,535.14/308.43
  6. Step 6: Final answer
    x = 244.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.