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Finding the Fourth Proportional to 180.72, 249.44 and 110.80

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Solution

The fourth proportional to 180.72, 249.44 and 110.80 is: 152.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.72 : 249.44 = 110.80 : x
  2. Step 2: Convert to fraction form
    180.72/249.44 = 110.80/x
  3. Step 3: Cross multiply
    180.72x = 249.44 × 110.80
  4. Step 4: Simplify right side
    180.72x = 27,637.95
  5. Step 5: Solve for x
    x = 27,637.95/180.72
  6. Step 6: Final answer
    x = 152.93

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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.