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Finding the Fourth Proportional to 271.56, 374.70 and 161.07

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Solution

The fourth proportional to 271.56, 374.70 and 161.07 is: 222.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.56 : 374.70 = 161.07 : x
  2. Step 2: Convert to fraction form
    271.56/374.70 = 161.07/x
  3. Step 3: Cross multiply
    271.56x = 374.70 × 161.07
  4. Step 4: Simplify right side
    271.56x = 60,353.78
  5. Step 5: Solve for x
    x = 60,353.78/271.56
  6. Step 6: Final answer
    x = 222.25

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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.