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Finding the Fourth Proportional to 180.84, 249.58 and 103.22

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Solution

The fourth proportional to 180.84, 249.58 and 103.22 is: 142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.84 : 249.58 = 103.22 : x
  2. Step 2: Convert to fraction form
    180.84/249.58 = 103.22/x
  3. Step 3: Cross multiply
    180.84x = 249.58 × 103.22
  4. Step 4: Simplify right side
    180.84x = 25,761.46
  5. Step 5: Solve for x
    x = 25,761.46/180.84
  6. Step 6: Final answer
    x = 142.45

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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.