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Finding the Fourth Proportional to 996.96, 1,493.28 and 832.80

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Solution

The fourth proportional to 996.96, 1,493.28 and 832.80 is: 1,247.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.96 : 1,493.28 = 832.80 : x
  2. Step 2: Convert to fraction form
    996.96/1,493.28 = 832.80/x
  3. Step 3: Cross multiply
    996.96x = 1,493.28 × 832.80
  4. Step 4: Simplify right side
    996.96x = 1,243,603.58
  5. Step 5: Solve for x
    x = 1,243,603.58/996.96
  6. Step 6: Final answer
    x = 1,247.40

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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.