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Finding the Fourth Proportional to 243.20, 335.60 and 132.67

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Solution

The fourth proportional to 243.20, 335.60 and 132.67 is: 183.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.20 : 335.60 = 132.67 : x
  2. Step 2: Convert to fraction form
    243.20/335.60 = 132.67/x
  3. Step 3: Cross multiply
    243.20x = 335.60 × 132.67
  4. Step 4: Simplify right side
    243.20x = 44,524.05
  5. Step 5: Solve for x
    x = 44,524.05/243.20
  6. Step 6: Final answer
    x = 183.08

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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.