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Finding the Fourth Proportional to 180.28, 248.44 and 143.36

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Solution

The fourth proportional to 180.28, 248.44 and 143.36 is: 197.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.28 : 248.44 = 143.36 : x
  2. Step 2: Convert to fraction form
    180.28/248.44 = 143.36/x
  3. Step 3: Cross multiply
    180.28x = 248.44 × 143.36
  4. Step 4: Simplify right side
    180.28x = 35,616.36
  5. Step 5: Solve for x
    x = 35,616.36/180.28
  6. Step 6: Final answer
    x = 197.56

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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.