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Finding the Fourth Proportional to 146.22, 201.98 and 122.86

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Solution

The fourth proportional to 146.22, 201.98 and 122.86 is: 169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.22 : 201.98 = 122.86 : x
  2. Step 2: Convert to fraction form
    146.22/201.98 = 122.86/x
  3. Step 3: Cross multiply
    146.22x = 201.98 × 122.86
  4. Step 4: Simplify right side
    146.22x = 24,815.26
  5. Step 5: Solve for x
    x = 24,815.26/146.22
  6. Step 6: Final answer
    x = 169.71

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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.