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Finding the Fourth Proportional to 799.98, 1,102.68 and 613.14

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Solution

The fourth proportional to 799.98, 1,102.68 and 613.14 is: 845.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.98 : 1,102.68 = 613.14 : x
  2. Step 2: Convert to fraction form
    799.98/1,102.68 = 613.14/x
  3. Step 3: Cross multiply
    799.98x = 1,102.68 × 613.14
  4. Step 4: Simplify right side
    799.98x = 676,097.22
  5. Step 5: Solve for x
    x = 676,097.22/799.98
  6. Step 6: Final answer
    x = 845.14

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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.