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Finding the Fourth Proportional to 220.09, 330.02 and 73.79

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Solution

The fourth proportional to 220.09, 330.02 and 73.79 is: 110.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.09 : 330.02 = 73.79 : x
  2. Step 2: Convert to fraction form
    220.09/330.02 = 73.79/x
  3. Step 3: Cross multiply
    220.09x = 330.02 × 73.79
  4. Step 4: Simplify right side
    220.09x = 24,350.36
  5. Step 5: Solve for x
    x = 24,350.36/220.09
  6. Step 6: Final answer
    x = 110.64

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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.