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Finding the Fourth Proportional to 799.04, 1,199.10 and 690.68

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Solution

The fourth proportional to 799.04, 1,199.10 and 690.68 is: 1,036.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.04 : 1,199.10 = 690.68 : x
  2. Step 2: Convert to fraction form
    799.04/1,199.10 = 690.68/x
  3. Step 3: Cross multiply
    799.04x = 1,199.10 × 690.68
  4. Step 4: Simplify right side
    799.04x = 828,194.39
  5. Step 5: Solve for x
    x = 828,194.39/799.04
  6. Step 6: Final answer
    x = 1,036.49

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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.