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Finding the Fourth Proportional to 164.37, 226.28 and 122.79

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Solution

The fourth proportional to 164.37, 226.28 and 122.79 is: 169.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.37 : 226.28 = 122.79 : x
  2. Step 2: Convert to fraction form
    164.37/226.28 = 122.79/x
  3. Step 3: Cross multiply
    164.37x = 226.28 × 122.79
  4. Step 4: Simplify right side
    164.37x = 27,784.31
  5. Step 5: Solve for x
    x = 27,784.31/164.37
  6. Step 6: Final answer
    x = 169.04

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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.