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Finding the Fourth Proportional to 221.90, 332.60 and 119.05

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Solution

The fourth proportional to 221.90, 332.60 and 119.05 is: 178.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.90 : 332.60 = 119.05 : x
  2. Step 2: Convert to fraction form
    221.90/332.60 = 119.05/x
  3. Step 3: Cross multiply
    221.90x = 332.60 × 119.05
  4. Step 4: Simplify right side
    221.90x = 39,594.60
  5. Step 5: Solve for x
    x = 39,594.60/221.90
  6. Step 6: Final answer
    x = 178.44

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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.