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Finding the Fourth Proportional to 801.11, 1,201.71 and 223.98

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Solution

The fourth proportional to 801.11, 1,201.71 and 223.98 is: 335.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.11 : 1,201.71 = 223.98 : x
  2. Step 2: Convert to fraction form
    801.11/1,201.71 = 223.98/x
  3. Step 3: Cross multiply
    801.11x = 1,201.71 × 223.98
  4. Step 4: Simplify right side
    801.11x = 269,157.89
  5. Step 5: Solve for x
    x = 269,157.89/801.11
  6. Step 6: Final answer
    x = 335.98

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.