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Finding the Fourth Proportional to 223.20, 333.32 and 190.88

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Solution

The fourth proportional to 223.20, 333.32 and 190.88 is: 285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.20 : 333.32 = 190.88 : x
  2. Step 2: Convert to fraction form
    223.20/333.32 = 190.88/x
  3. Step 3: Cross multiply
    223.20x = 333.32 × 190.88
  4. Step 4: Simplify right side
    223.20x = 63,624.12
  5. Step 5: Solve for x
    x = 63,624.12/223.20
  6. Step 6: Final answer
    x = 285.05

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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.