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Finding the Fourth Proportional to 223.50, 333.72 and 200.21

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Solution

The fourth proportional to 223.50, 333.72 and 200.21 is: 298.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.50 : 333.72 = 200.21 : x
  2. Step 2: Convert to fraction form
    223.50/333.72 = 200.21/x
  3. Step 3: Cross multiply
    223.50x = 333.72 × 200.21
  4. Step 4: Simplify right side
    223.50x = 66,813.08
  5. Step 5: Solve for x
    x = 66,813.08/223.50
  6. Step 6: Final answer
    x = 298.95

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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.