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Finding the Fourth Proportional to 998.04, 1,488.54 and 963.21

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Solution

The fourth proportional to 998.04, 1,488.54 and 963.21 is: 1,436.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.04 : 1,488.54 = 963.21 : x
  2. Step 2: Convert to fraction form
    998.04/1,488.54 = 963.21/x
  3. Step 3: Cross multiply
    998.04x = 1,488.54 × 963.21
  4. Step 4: Simplify right side
    998.04x = 1,433,771.80
  5. Step 5: Solve for x
    x = 1,433,771.80/998.04
  6. Step 6: Final answer
    x = 1,436.59

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.