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Finding the Fourth Proportional to 998.75, 1,496.37 and 890.03

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Solution

The fourth proportional to 998.75, 1,496.37 and 890.03 is: 1,333.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.75 : 1,496.37 = 890.03 : x
  2. Step 2: Convert to fraction form
    998.75/1,496.37 = 890.03/x
  3. Step 3: Cross multiply
    998.75x = 1,496.37 × 890.03
  4. Step 4: Simplify right side
    998.75x = 1,331,817.93
  5. Step 5: Solve for x
    x = 1,331,817.93/998.75
  6. Step 6: Final answer
    x = 1,333.48

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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.