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Finding the Fourth Proportional to 221.01, 304.99 and 133.73

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Solution

The fourth proportional to 221.01, 304.99 and 133.73 is: 184.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.01 : 304.99 = 133.73 : x
  2. Step 2: Convert to fraction form
    221.01/304.99 = 133.73/x
  3. Step 3: Cross multiply
    221.01x = 304.99 × 133.73
  4. Step 4: Simplify right side
    221.01x = 40,784.79
  5. Step 5: Solve for x
    x = 40,784.79/221.01
  6. Step 6: Final answer
    x = 184.54

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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.