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Finding the Fourth Proportional to 796.69, 1,099.44 and 486.19

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Solution

The fourth proportional to 796.69, 1,099.44 and 486.19 is: 670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.69 : 1,099.44 = 486.19 : x
  2. Step 2: Convert to fraction form
    796.69/1,099.44 = 486.19/x
  3. Step 3: Cross multiply
    796.69x = 1,099.44 × 486.19
  4. Step 4: Simplify right side
    796.69x = 534,533.99
  5. Step 5: Solve for x
    x = 534,533.99/796.69
  6. Step 6: Final answer
    x = 670.95

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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.