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Finding the Fourth Proportional to 195.31, 292.20 and 126.28

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Solution

The fourth proportional to 195.31, 292.20 and 126.28 is: 188.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.31 : 292.20 = 126.28 : x
  2. Step 2: Convert to fraction form
    195.31/292.20 = 126.28/x
  3. Step 3: Cross multiply
    195.31x = 292.20 × 126.28
  4. Step 4: Simplify right side
    195.31x = 36,899.02
  5. Step 5: Solve for x
    x = 36,899.02/195.31
  6. Step 6: Final answer
    x = 188.93

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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.