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Finding the Fourth Proportional to 143.36, 196.48 and 140.84

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Solution

The fourth proportional to 143.36, 196.48 and 140.84 is: 193.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.36 : 196.48 = 140.84 : x
  2. Step 2: Convert to fraction form
    143.36/196.48 = 140.84/x
  3. Step 3: Cross multiply
    143.36x = 196.48 × 140.84
  4. Step 4: Simplify right side
    143.36x = 27,672.24
  5. Step 5: Solve for x
    x = 27,672.24/143.36
  6. Step 6: Final answer
    x = 193.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.