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Finding the Fourth Proportional to 221.48, 331.77 and 160.73

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Solution

The fourth proportional to 221.48, 331.77 and 160.73 is: 240.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.48 : 331.77 = 160.73 : x
  2. Step 2: Convert to fraction form
    221.48/331.77 = 160.73/x
  3. Step 3: Cross multiply
    221.48x = 331.77 × 160.73
  4. Step 4: Simplify right side
    221.48x = 53,325.39
  5. Step 5: Solve for x
    x = 53,325.39/221.48
  6. Step 6: Final answer
    x = 240.77

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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.