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Finding the Fourth Proportional to 229.85, 344.34 and 126.98

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Solution

The fourth proportional to 229.85, 344.34 and 126.98 is: 190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.85 : 344.34 = 126.98 : x
  2. Step 2: Convert to fraction form
    229.85/344.34 = 126.98/x
  3. Step 3: Cross multiply
    229.85x = 344.34 × 126.98
  4. Step 4: Simplify right side
    229.85x = 43,724.29
  5. Step 5: Solve for x
    x = 43,724.29/229.85
  6. Step 6: Final answer
    x = 190.23

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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.