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Finding the Fourth Proportional to 195.36, 292.86 and 126.68

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Solution

The fourth proportional to 195.36, 292.86 and 126.68 is: 189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.36 : 292.86 = 126.68 : x
  2. Step 2: Convert to fraction form
    195.36/292.86 = 126.68/x
  3. Step 3: Cross multiply
    195.36x = 292.86 × 126.68
  4. Step 4: Simplify right side
    195.36x = 37,099.50
  5. Step 5: Solve for x
    x = 37,099.50/195.36
  6. Step 6: Final answer
    x = 189.90

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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.