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Finding the Fourth Proportional to 322.07, 444.39 and 191.09

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Solution

The fourth proportional to 322.07, 444.39 and 191.09 is: 263.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.07 : 444.39 = 191.09 : x
  2. Step 2: Convert to fraction form
    322.07/444.39 = 191.09/x
  3. Step 3: Cross multiply
    322.07x = 444.39 × 191.09
  4. Step 4: Simplify right side
    322.07x = 84,918.49
  5. Step 5: Solve for x
    x = 84,918.49/322.07
  6. Step 6: Final answer
    x = 263.66

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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.