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Finding the Fourth Proportional to 203.49, 280.64 and 166.58

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Solution

The fourth proportional to 203.49, 280.64 and 166.58 is: 229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.49 : 280.64 = 166.58 : x
  2. Step 2: Convert to fraction form
    203.49/280.64 = 166.58/x
  3. Step 3: Cross multiply
    203.49x = 280.64 × 166.58
  4. Step 4: Simplify right side
    203.49x = 46,749.01
  5. Step 5: Solve for x
    x = 46,749.01/203.49
  6. Step 6: Final answer
    x = 229.74

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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.