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Finding the Fourth Proportional to 996.88, 1,375.46 and 603.22

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Solution

The fourth proportional to 996.88, 1,375.46 and 603.22 is: 832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.88 : 1,375.46 = 603.22 : x
  2. Step 2: Convert to fraction form
    996.88/1,375.46 = 603.22/x
  3. Step 3: Cross multiply
    996.88x = 1,375.46 × 603.22
  4. Step 4: Simplify right side
    996.88x = 829,704.98
  5. Step 5: Solve for x
    x = 829,704.98/996.88
  6. Step 6: Final answer
    x = 832.30

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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.