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Finding the Fourth Proportional to 243.37, 365.06 and 121.63

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Solution

The fourth proportional to 243.37, 365.06 and 121.63 is: 182.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.37 : 365.06 = 121.63 : x
  2. Step 2: Convert to fraction form
    243.37/365.06 = 121.63/x
  3. Step 3: Cross multiply
    243.37x = 365.06 × 121.63
  4. Step 4: Simplify right side
    243.37x = 44,400.73
  5. Step 5: Solve for x
    x = 44,400.73/243.37
  6. Step 6: Final answer
    x = 182.44

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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.