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Finding the Fourth Proportional to 796.79, 1,099.80 and 517.02

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Solution

The fourth proportional to 796.79, 1,099.80 and 517.02 is: 713.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.79 : 1,099.80 = 517.02 : x
  2. Step 2: Convert to fraction form
    796.79/1,099.80 = 517.02/x
  3. Step 3: Cross multiply
    796.79x = 1,099.80 × 517.02
  4. Step 4: Simplify right side
    796.79x = 568,618.60
  5. Step 5: Solve for x
    x = 568,618.60/796.79
  6. Step 6: Final answer
    x = 713.64

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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.