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Finding the Fourth Proportional to 171.19, 234.70 and 166.60

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Solution

The fourth proportional to 171.19, 234.70 and 166.60 is: 228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.19 : 234.70 = 166.60 : x
  2. Step 2: Convert to fraction form
    171.19/234.70 = 166.60/x
  3. Step 3: Cross multiply
    171.19x = 234.70 × 166.60
  4. Step 4: Simplify right side
    171.19x = 39,101.02
  5. Step 5: Solve for x
    x = 39,101.02/171.19
  6. Step 6: Final answer
    x = 228.41

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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.