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Finding the Fourth Proportional to 177.39, 244.62 and 122.11

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Solution

The fourth proportional to 177.39, 244.62 and 122.11 is: 168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.39 : 244.62 = 122.11 : x
  2. Step 2: Convert to fraction form
    177.39/244.62 = 122.11/x
  3. Step 3: Cross multiply
    177.39x = 244.62 × 122.11
  4. Step 4: Simplify right side
    177.39x = 29,869.94
  5. Step 5: Solve for x
    x = 29,869.94/177.39
  6. Step 6: Final answer
    x = 168.39

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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.