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Finding the Fourth Proportional to 203.46, 280.65 and 166.17

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Solution

The fourth proportional to 203.46, 280.65 and 166.17 is: 229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.46 : 280.65 = 166.17 : x
  2. Step 2: Convert to fraction form
    203.46/280.65 = 166.17/x
  3. Step 3: Cross multiply
    203.46x = 280.65 × 166.17
  4. Step 4: Simplify right side
    203.46x = 46,635.61
  5. Step 5: Solve for x
    x = 46,635.61/203.46
  6. Step 6: Final answer
    x = 229.21

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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.