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Finding the Fourth Proportional to 160.33, 221.18 and 154.12

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Solution

The fourth proportional to 160.33, 221.18 and 154.12 is: 212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.33 : 221.18 = 154.12 : x
  2. Step 2: Convert to fraction form
    160.33/221.18 = 154.12/x
  3. Step 3: Cross multiply
    160.33x = 221.18 × 154.12
  4. Step 4: Simplify right side
    160.33x = 34,086.94
  5. Step 5: Solve for x
    x = 34,086.94/160.33
  6. Step 6: Final answer
    x = 212.61

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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.