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Finding the Fourth Proportional to 180.84, 249.66 and 169.86

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Solution

The fourth proportional to 180.84, 249.66 and 169.86 is: 234.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.84 : 249.66 = 169.86 : x
  2. Step 2: Convert to fraction form
    180.84/249.66 = 169.86/x
  3. Step 3: Cross multiply
    180.84x = 249.66 × 169.86
  4. Step 4: Simplify right side
    180.84x = 42,407.25
  5. Step 5: Solve for x
    x = 42,407.25/180.84
  6. Step 6: Final answer
    x = 234.50

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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.