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Finding the Fourth Proportional to 186.06, 278.64 and 108.87

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Solution

The fourth proportional to 186.06, 278.64 and 108.87 is: 163.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.06 : 278.64 = 108.87 : x
  2. Step 2: Convert to fraction form
    186.06/278.64 = 108.87/x
  3. Step 3: Cross multiply
    186.06x = 278.64 × 108.87
  4. Step 4: Simplify right side
    186.06x = 30,335.54
  5. Step 5: Solve for x
    x = 30,335.54/186.06
  6. Step 6: Final answer
    x = 163.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.