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Finding the Fourth Proportional to 220.98, 331.02 and 160.23

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Solution

The fourth proportional to 220.98, 331.02 and 160.23 is: 240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.98 : 331.02 = 160.23 : x
  2. Step 2: Convert to fraction form
    220.98/331.02 = 160.23/x
  3. Step 3: Cross multiply
    220.98x = 331.02 × 160.23
  4. Step 4: Simplify right side
    220.98x = 53,039.33
  5. Step 5: Solve for x
    x = 53,039.33/220.98
  6. Step 6: Final answer
    x = 240.02

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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.