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Finding the Fourth Proportional to 201.43, 277.72 and 166.60

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Solution

The fourth proportional to 201.43, 277.72 and 166.60 is: 229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.43 : 277.72 = 166.60 : x
  2. Step 2: Convert to fraction form
    201.43/277.72 = 166.60/x
  3. Step 3: Cross multiply
    201.43x = 277.72 × 166.60
  4. Step 4: Simplify right side
    201.43x = 46,268.15
  5. Step 5: Solve for x
    x = 46,268.15/201.43
  6. Step 6: Final answer
    x = 229.70

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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.