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Finding the Fourth Proportional to 203.25, 304.92 and 126.06

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Solution

The fourth proportional to 203.25, 304.92 and 126.06 is: 189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.25 : 304.92 = 126.06 : x
  2. Step 2: Convert to fraction form
    203.25/304.92 = 126.06/x
  3. Step 3: Cross multiply
    203.25x = 304.92 × 126.06
  4. Step 4: Simplify right side
    203.25x = 38,438.22
  5. Step 5: Solve for x
    x = 38,438.22/203.25
  6. Step 6: Final answer
    x = 189.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.