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Finding the Fourth Proportional to 221.11, 331.16 and 175.08

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Solution

The fourth proportional to 221.11, 331.16 and 175.08 is: 262.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.11 : 331.16 = 175.08 : x
  2. Step 2: Convert to fraction form
    221.11/331.16 = 175.08/x
  3. Step 3: Cross multiply
    221.11x = 331.16 × 175.08
  4. Step 4: Simplify right side
    221.11x = 57,977.40
  5. Step 5: Solve for x
    x = 57,977.40/221.11
  6. Step 6: Final answer
    x = 262.21

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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.