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Finding the Fourth Proportional to 180.94, 249.68 and 114.47

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Solution

The fourth proportional to 180.94, 249.68 and 114.47 is: 157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.94 : 249.68 = 114.47 : x
  2. Step 2: Convert to fraction form
    180.94/249.68 = 114.47/x
  3. Step 3: Cross multiply
    180.94x = 249.68 × 114.47
  4. Step 4: Simplify right side
    180.94x = 28,580.87
  5. Step 5: Solve for x
    x = 28,580.87/180.94
  6. Step 6: Final answer
    x = 157.96

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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.