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Finding the Fourth Proportional to 230.30, 344.83 and 121.76

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Solution

The fourth proportional to 230.30, 344.83 and 121.76 is: 182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.30 : 344.83 = 121.76 : x
  2. Step 2: Convert to fraction form
    230.30/344.83 = 121.76/x
  3. Step 3: Cross multiply
    230.30x = 344.83 × 121.76
  4. Step 4: Simplify right side
    230.30x = 41,984.78
  5. Step 5: Solve for x
    x = 41,984.78/230.30
  6. Step 6: Final answer
    x = 182.31

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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.