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Finding the Fourth Proportional to 998.34, 1,496.46 and 633.36

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Solution

The fourth proportional to 998.34, 1,496.46 and 633.36 is: 949.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.34 : 1,496.46 = 633.36 : x
  2. Step 2: Convert to fraction form
    998.34/1,496.46 = 633.36/x
  3. Step 3: Cross multiply
    998.34x = 1,496.46 × 633.36
  4. Step 4: Simplify right side
    998.34x = 947,797.91
  5. Step 5: Solve for x
    x = 947,797.91/998.34
  6. Step 6: Final answer
    x = 949.37

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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.