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Finding the Fourth Proportional to 294.12, 406.07 and 189.27

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Solution

The fourth proportional to 294.12, 406.07 and 189.27 is: 261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.12 : 406.07 = 189.27 : x
  2. Step 2: Convert to fraction form
    294.12/406.07 = 189.27/x
  3. Step 3: Cross multiply
    294.12x = 406.07 × 189.27
  4. Step 4: Simplify right side
    294.12x = 76,856.87
  5. Step 5: Solve for x
    x = 76,856.87/294.12
  6. Step 6: Final answer
    x = 261.31

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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.