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Finding the Fourth Proportional to 161.73, 224.37 and 155.79

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Solution

The fourth proportional to 161.73, 224.37 and 155.79 is: 216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.73 : 224.37 = 155.79 : x
  2. Step 2: Convert to fraction form
    161.73/224.37 = 155.79/x
  3. Step 3: Cross multiply
    161.73x = 224.37 × 155.79
  4. Step 4: Simplify right side
    161.73x = 34,954.60
  5. Step 5: Solve for x
    x = 34,954.60/161.73
  6. Step 6: Final answer
    x = 216.13

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.