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Finding the Fourth Proportional to 221.24, 305.61 and 200.54

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Solution

The fourth proportional to 221.24, 305.61 and 200.54 is: 277.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.24 : 305.61 = 200.54 : x
  2. Step 2: Convert to fraction form
    221.24/305.61 = 200.54/x
  3. Step 3: Cross multiply
    221.24x = 305.61 × 200.54
  4. Step 4: Simplify right side
    221.24x = 61,287.03
  5. Step 5: Solve for x
    x = 61,287.03/221.24
  6. Step 6: Final answer
    x = 277.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.