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Finding the Fourth Proportional to 996.51, 1,491.96 and 752.28

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Solution

The fourth proportional to 996.51, 1,491.96 and 752.28 is: 1,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.51 : 1,491.96 = 752.28 : x
  2. Step 2: Convert to fraction form
    996.51/1,491.96 = 752.28/x
  3. Step 3: Cross multiply
    996.51x = 1,491.96 × 752.28
  4. Step 4: Simplify right side
    996.51x = 1,122,371.67
  5. Step 5: Solve for x
    x = 1,122,371.67/996.51
  6. Step 6: Final answer
    x = 1,126.30

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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.