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Finding the Fourth Proportional to 796.58, 1,098.12 and 559.80

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Solution

The fourth proportional to 796.58, 1,098.12 and 559.80 is: 771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.58 : 1,098.12 = 559.80 : x
  2. Step 2: Convert to fraction form
    796.58/1,098.12 = 559.80/x
  3. Step 3: Cross multiply
    796.58x = 1,098.12 × 559.80
  4. Step 4: Simplify right side
    796.58x = 614,727.58
  5. Step 5: Solve for x
    x = 614,727.58/796.58
  6. Step 6: Final answer
    x = 771.71

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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.