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Finding the Fourth Proportional to 180.70, 271.49 and 161.26

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Solution

The fourth proportional to 180.70, 271.49 and 161.26 is: 242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.70 : 271.49 = 161.26 : x
  2. Step 2: Convert to fraction form
    180.70/271.49 = 161.26/x
  3. Step 3: Cross multiply
    180.70x = 271.49 × 161.26
  4. Step 4: Simplify right side
    180.70x = 43,778.99
  5. Step 5: Solve for x
    x = 43,778.99/180.70
  6. Step 6: Final answer
    x = 242.28

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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.