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Finding the Fourth Proportional to 202.60, 277.67 and 199.90

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Solution

The fourth proportional to 202.60, 277.67 and 199.90 is: 273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.60 : 277.67 = 199.90 : x
  2. Step 2: Convert to fraction form
    202.60/277.67 = 199.90/x
  3. Step 3: Cross multiply
    202.60x = 277.67 × 199.90
  4. Step 4: Simplify right side
    202.60x = 55,506.23
  5. Step 5: Solve for x
    x = 55,506.23/202.60
  6. Step 6: Final answer
    x = 273.97

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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.