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Finding the Fourth Proportional to 996.38, 1,375.03 and 603.17

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Solution

The fourth proportional to 996.38, 1,375.03 and 603.17 is: 832.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.38 : 1,375.03 = 603.17 : x
  2. Step 2: Convert to fraction form
    996.38/1,375.03 = 603.17/x
  3. Step 3: Cross multiply
    996.38x = 1,375.03 × 603.17
  4. Step 4: Simplify right side
    996.38x = 829,376.85
  5. Step 5: Solve for x
    x = 829,376.85/996.38
  6. Step 6: Final answer
    x = 832.39

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Double scale
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1.5x scale

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.