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Finding the Fourth Proportional to 799.13, 1,198.62 and 434.63

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Solution

The fourth proportional to 799.13, 1,198.62 and 434.63 is: 651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.13 : 1,198.62 = 434.63 : x
  2. Step 2: Convert to fraction form
    799.13/1,198.62 = 434.63/x
  3. Step 3: Cross multiply
    799.13x = 1,198.62 × 434.63
  4. Step 4: Simplify right side
    799.13x = 520,950.22
  5. Step 5: Solve for x
    x = 520,950.22/799.13
  6. Step 6: Final answer
    x = 651.90

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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.