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Finding the Fourth Proportional to 243.98, 367.60 and 220.87

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Solution

The fourth proportional to 243.98, 367.60 and 220.87 is: 332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.98 : 367.60 = 220.87 : x
  2. Step 2: Convert to fraction form
    243.98/367.60 = 220.87/x
  3. Step 3: Cross multiply
    243.98x = 367.60 × 220.87
  4. Step 4: Simplify right side
    243.98x = 81,191.81
  5. Step 5: Solve for x
    x = 81,191.81/243.98
  6. Step 6: Final answer
    x = 332.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.