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Finding the Fourth Proportional to 799.98, 1,103.40 and 634.14

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Solution

The fourth proportional to 799.98, 1,103.40 and 634.14 is: 874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.98 : 1,103.40 = 634.14 : x
  2. Step 2: Convert to fraction form
    799.98/1,103.40 = 634.14/x
  3. Step 3: Cross multiply
    799.98x = 1,103.40 × 634.14
  4. Step 4: Simplify right side
    799.98x = 699,710.08
  5. Step 5: Solve for x
    x = 699,710.08/799.98
  6. Step 6: Final answer
    x = 874.66

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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.