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Finding the Fourth Proportional to 180.46, 248.97 and 102.79

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Solution

The fourth proportional to 180.46, 248.97 and 102.79 is: 141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.46 : 248.97 = 102.79 : x
  2. Step 2: Convert to fraction form
    180.46/248.97 = 102.79/x
  3. Step 3: Cross multiply
    180.46x = 248.97 × 102.79
  4. Step 4: Simplify right side
    180.46x = 25,591.63
  5. Step 5: Solve for x
    x = 25,591.63/180.46
  6. Step 6: Final answer
    x = 141.81

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