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Finding the Fourth Proportional to 122.23, 182.26 and 120.75

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Solution

The fourth proportional to 122.23, 182.26 and 120.75 is: 180.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.23 : 182.26 = 120.75 : x
  2. Step 2: Convert to fraction form
    122.23/182.26 = 120.75/x
  3. Step 3: Cross multiply
    122.23x = 182.26 × 120.75
  4. Step 4: Simplify right side
    122.23x = 22,007.90
  5. Step 5: Solve for x
    x = 22,007.90/122.23
  6. Step 6: Final answer
    x = 180.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.