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Finding the Fourth Proportional to 166.98, 228.97 and 161.19

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Solution

The fourth proportional to 166.98, 228.97 and 161.19 is: 221.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.98 : 228.97 = 161.19 : x
  2. Step 2: Convert to fraction form
    166.98/228.97 = 161.19/x
  3. Step 3: Cross multiply
    166.98x = 228.97 × 161.19
  4. Step 4: Simplify right side
    166.98x = 36,907.88
  5. Step 5: Solve for x
    x = 36,907.88/166.98
  6. Step 6: Final answer
    x = 221.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.