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Finding the Fourth Proportional to 997.39, 1,496.22 and 936.64

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Solution

The fourth proportional to 997.39, 1,496.22 and 936.64 is: 1,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.39 : 1,496.22 = 936.64 : x
  2. Step 2: Convert to fraction form
    997.39/1,496.22 = 936.64/x
  3. Step 3: Cross multiply
    997.39x = 1,496.22 × 936.64
  4. Step 4: Simplify right side
    997.39x = 1,401,419.50
  5. Step 5: Solve for x
    x = 1,401,419.50/997.39
  6. Step 6: Final answer
    x = 1,405.09

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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.