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Finding the Fourth Proportional to 996.20, 1,491.94 and 532.82

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Solution

The fourth proportional to 996.20, 1,491.94 and 532.82 is: 797.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.20 : 1,491.94 = 532.82 : x
  2. Step 2: Convert to fraction form
    996.20/1,491.94 = 532.82/x
  3. Step 3: Cross multiply
    996.20x = 1,491.94 × 532.82
  4. Step 4: Simplify right side
    996.20x = 794,935.47
  5. Step 5: Solve for x
    x = 794,935.47/996.20
  6. Step 6: Final answer
    x = 797.97

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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.