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Finding the Fourth Proportional to 243.85, 365.85 and 122.14

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Solution

The fourth proportional to 243.85, 365.85 and 122.14 is: 183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.85 : 365.85 = 122.14 : x
  2. Step 2: Convert to fraction form
    243.85/365.85 = 122.14/x
  3. Step 3: Cross multiply
    243.85x = 365.85 × 122.14
  4. Step 4: Simplify right side
    243.85x = 44,684.92
  5. Step 5: Solve for x
    x = 44,684.92/243.85
  6. Step 6: Final answer
    x = 183.25

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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.