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Finding the Fourth Proportional to 221.05, 305.06 and 132.53

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Solution

The fourth proportional to 221.05, 305.06 and 132.53 is: 182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.05 : 305.06 = 132.53 : x
  2. Step 2: Convert to fraction form
    221.05/305.06 = 132.53/x
  3. Step 3: Cross multiply
    221.05x = 305.06 × 132.53
  4. Step 4: Simplify right side
    221.05x = 40,431.72
  5. Step 5: Solve for x
    x = 40,431.72/221.05
  6. Step 6: Final answer
    x = 182.91

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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.