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Finding the Fourth Proportional to 322.58, 445.37 and 263.71

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Solution

The fourth proportional to 322.58, 445.37 and 263.71 is: 364.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.58 : 445.37 = 263.71 : x
  2. Step 2: Convert to fraction form
    322.58/445.37 = 263.71/x
  3. Step 3: Cross multiply
    322.58x = 445.37 × 263.71
  4. Step 4: Simplify right side
    322.58x = 117,448.52
  5. Step 5: Solve for x
    x = 117,448.52/322.58
  6. Step 6: Final answer
    x = 364.09

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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.