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Finding the Fourth Proportional to 997.12, 1,496.49 and 535.15

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Solution

The fourth proportional to 997.12, 1,496.49 and 535.15 is: 803.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.12 : 1,496.49 = 535.15 : x
  2. Step 2: Convert to fraction form
    997.12/1,496.49 = 535.15/x
  3. Step 3: Cross multiply
    997.12x = 1,496.49 × 535.15
  4. Step 4: Simplify right side
    997.12x = 800,846.62
  5. Step 5: Solve for x
    x = 800,846.62/997.12
  6. Step 6: Final answer
    x = 803.16

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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.