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Finding the Fourth Proportional to 223.30, 333.01 and 220.90

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Solution

The fourth proportional to 223.30, 333.01 and 220.90 is: 329.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.30 : 333.01 = 220.90 : x
  2. Step 2: Convert to fraction form
    223.30/333.01 = 220.90/x
  3. Step 3: Cross multiply
    223.30x = 333.01 × 220.90
  4. Step 4: Simplify right side
    223.30x = 73,561.91
  5. Step 5: Solve for x
    x = 73,561.91/223.30
  6. Step 6: Final answer
    x = 329.43

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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.