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Finding the Fourth Proportional to 203.50, 280.96 and 166.25

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Solution

The fourth proportional to 203.50, 280.96 and 166.25 is: 229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.50 : 280.96 = 166.25 : x
  2. Step 2: Convert to fraction form
    203.50/280.96 = 166.25/x
  3. Step 3: Cross multiply
    203.50x = 280.96 × 166.25
  4. Step 4: Simplify right side
    203.50x = 46,708.48
  5. Step 5: Solve for x
    x = 46,708.48/203.50
  6. Step 6: Final answer
    x = 229.53

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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.