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Finding the Fourth Proportional to 308.20, 425.41 and 177.29

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Solution

The fourth proportional to 308.20, 425.41 and 177.29 is: 244.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.20 : 425.41 = 177.29 : x
  2. Step 2: Convert to fraction form
    308.20/425.41 = 177.29/x
  3. Step 3: Cross multiply
    308.20x = 425.41 × 177.29
  4. Step 4: Simplify right side
    308.20x = 75,421.56
  5. Step 5: Solve for x
    x = 75,421.56/308.20
  6. Step 6: Final answer
    x = 244.72

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