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Finding the Fourth Proportional to 996.76, 1,487.17 and 875.26

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Solution

The fourth proportional to 996.76, 1,487.17 and 875.26 is: 1,305.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.76 : 1,487.17 = 875.26 : x
  2. Step 2: Convert to fraction form
    996.76/1,487.17 = 875.26/x
  3. Step 3: Cross multiply
    996.76x = 1,487.17 × 875.26
  4. Step 4: Simplify right side
    996.76x = 1,301,660.41
  5. Step 5: Solve for x
    x = 1,301,660.41/996.76
  6. Step 6: Final answer
    x = 1,305.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.