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Finding the Fourth Proportional to 180.26, 248.83 and 122.12

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Solution

The fourth proportional to 180.26, 248.83 and 122.12 is: 168.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.26 : 248.83 = 122.12 : x
  2. Step 2: Convert to fraction form
    180.26/248.83 = 122.12/x
  3. Step 3: Cross multiply
    180.26x = 248.83 × 122.12
  4. Step 4: Simplify right side
    180.26x = 30,387.12
  5. Step 5: Solve for x
    x = 30,387.12/180.26
  6. Step 6: Final answer
    x = 168.57

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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.