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Finding the Fourth Proportional to 998.04, 1,377.42 and 605.04

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Solution

The fourth proportional to 998.04, 1,377.42 and 605.04 is: 835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.04 : 1,377.42 = 605.04 : x
  2. Step 2: Convert to fraction form
    998.04/1,377.42 = 605.04/x
  3. Step 3: Cross multiply
    998.04x = 1,377.42 × 605.04
  4. Step 4: Simplify right side
    998.04x = 833,394.20
  5. Step 5: Solve for x
    x = 833,394.20/998.04
  6. Step 6: Final answer
    x = 835.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.