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Finding the Fourth Proportional to 126.57, 189.84 and 41.07

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Solution

The fourth proportional to 126.57, 189.84 and 41.07 is: 61.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.57 : 189.84 = 41.07 : x
  2. Step 2: Convert to fraction form
    126.57/189.84 = 41.07/x
  3. Step 3: Cross multiply
    126.57x = 189.84 × 41.07
  4. Step 4: Simplify right side
    126.57x = 7,796.73
  5. Step 5: Solve for x
    x = 7,796.73/126.57
  6. Step 6: Final answer
    x = 61.60

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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.