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Finding the Fourth Proportional to 201.02, 301.29 and 109.79

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Solution

The fourth proportional to 201.02, 301.29 and 109.79 is: 164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.02 : 301.29 = 109.79 : x
  2. Step 2: Convert to fraction form
    201.02/301.29 = 109.79/x
  3. Step 3: Cross multiply
    201.02x = 301.29 × 109.79
  4. Step 4: Simplify right side
    201.02x = 33,077.84
  5. Step 5: Solve for x
    x = 33,077.84/201.02
  6. Step 6: Final answer
    x = 164.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.