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Finding the Fourth Proportional to 177.18, 244.20 and 143.97

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Solution

The fourth proportional to 177.18, 244.20 and 143.97 is: 198.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.18 : 244.20 = 143.97 : x
  2. Step 2: Convert to fraction form
    177.18/244.20 = 143.97/x
  3. Step 3: Cross multiply
    177.18x = 244.20 × 143.97
  4. Step 4: Simplify right side
    177.18x = 35,157.47
  5. Step 5: Solve for x
    x = 35,157.47/177.18
  6. Step 6: Final answer
    x = 198.43

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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.