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Finding the Fourth Proportional to 166.93, 230.33 and 153.49

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Solution

The fourth proportional to 166.93, 230.33 and 153.49 is: 211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.93 : 230.33 = 153.49 : x
  2. Step 2: Convert to fraction form
    166.93/230.33 = 153.49/x
  3. Step 3: Cross multiply
    166.93x = 230.33 × 153.49
  4. Step 4: Simplify right side
    166.93x = 35,353.16
  5. Step 5: Solve for x
    x = 35,353.16/166.93
  6. Step 6: Final answer
    x = 211.79

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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.