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Finding the Fourth Proportional to 322.09, 444.28 and 191

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Solution

The fourth proportional to 322.09, 444.28 and 191 is: 263.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.09 : 444.28 = 191 : x
  2. Step 2: Convert to fraction form
    322.09/444.28 = 191/x
  3. Step 3: Cross multiply
    322.09x = 444.28 × 191
  4. Step 4: Simplify right side
    322.09x = 84,856.53
  5. Step 5: Solve for x
    x = 84,856.53/322.09
  6. Step 6: Final answer
    x = 263.46

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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.