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Finding the Fourth Proportional to 161.77, 223.05 and 141.27

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Solution

The fourth proportional to 161.77, 223.05 and 141.27 is: 194.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.77 : 223.05 = 141.27 : x
  2. Step 2: Convert to fraction form
    161.77/223.05 = 141.27/x
  3. Step 3: Cross multiply
    161.77x = 223.05 × 141.27
  4. Step 4: Simplify right side
    161.77x = 31,510.27
  5. Step 5: Solve for x
    x = 31,510.27/161.77
  6. Step 6: Final answer
    x = 194.78

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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.