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Finding the Fourth Proportional to 166.51, 230.04 and 154.20

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Solution

The fourth proportional to 166.51, 230.04 and 154.20 is: 213.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.51 : 230.04 = 154.20 : x
  2. Step 2: Convert to fraction form
    166.51/230.04 = 154.20/x
  3. Step 3: Cross multiply
    166.51x = 230.04 × 154.20
  4. Step 4: Simplify right side
    166.51x = 35,473.03
  5. Step 5: Solve for x
    x = 35,473.03/166.51
  6. Step 6: Final answer
    x = 213.04

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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.