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Finding the Fourth Proportional to 220.12, 331.42 and 181.52

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Solution

The fourth proportional to 220.12, 331.42 and 181.52 is: 273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.12 : 331.42 = 181.52 : x
  2. Step 2: Convert to fraction form
    220.12/331.42 = 181.52/x
  3. Step 3: Cross multiply
    220.12x = 331.42 × 181.52
  4. Step 4: Simplify right side
    220.12x = 60,159.36
  5. Step 5: Solve for x
    x = 60,159.36/220.12
  6. Step 6: Final answer
    x = 273.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.