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Finding the Fourth Proportional to 180.09, 248.54 and 106.38

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Solution

The fourth proportional to 180.09, 248.54 and 106.38 is: 146.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.09 : 248.54 = 106.38 : x
  2. Step 2: Convert to fraction form
    180.09/248.54 = 106.38/x
  3. Step 3: Cross multiply
    180.09x = 248.54 × 106.38
  4. Step 4: Simplify right side
    180.09x = 26,439.15
  5. Step 5: Solve for x
    x = 26,439.15/180.09
  6. Step 6: Final answer
    x = 146.81

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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.