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Finding the Fourth Proportional to 224.81, 310.39 and 140.82

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Solution

The fourth proportional to 224.81, 310.39 and 140.82 is: 194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.81 : 310.39 = 140.82 : x
  2. Step 2: Convert to fraction form
    224.81/310.39 = 140.82/x
  3. Step 3: Cross multiply
    224.81x = 310.39 × 140.82
  4. Step 4: Simplify right side
    224.81x = 43,709.35
  5. Step 5: Solve for x
    x = 43,709.35/224.81
  6. Step 6: Final answer
    x = 194.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.