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Finding the Fourth Proportional to 222.73, 331.65 and 220.28

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Solution

The fourth proportional to 222.73, 331.65 and 220.28 is: 328.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.73 : 331.65 = 220.28 : x
  2. Step 2: Convert to fraction form
    222.73/331.65 = 220.28/x
  3. Step 3: Cross multiply
    222.73x = 331.65 × 220.28
  4. Step 4: Simplify right side
    222.73x = 73,056.41
  5. Step 5: Solve for x
    x = 73,056.41/222.73
  6. Step 6: Final answer
    x = 328.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.