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Finding the Fourth Proportional to 180.98, 271.62 and 172.46

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Solution

The fourth proportional to 180.98, 271.62 and 172.46 is: 258.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.98 : 271.62 = 172.46 : x
  2. Step 2: Convert to fraction form
    180.98/271.62 = 172.46/x
  3. Step 3: Cross multiply
    180.98x = 271.62 × 172.46
  4. Step 4: Simplify right side
    180.98x = 46,843.59
  5. Step 5: Solve for x
    x = 46,843.59/180.98
  6. Step 6: Final answer
    x = 258.83

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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.