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Finding the Fourth Proportional to 796.42, 1,098.79 and 516.87

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Solution

The fourth proportional to 796.42, 1,098.79 and 516.87 is: 713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.42 : 1,098.79 = 516.87 : x
  2. Step 2: Convert to fraction form
    796.42/1,098.79 = 516.87/x
  3. Step 3: Cross multiply
    796.42x = 1,098.79 × 516.87
  4. Step 4: Simplify right side
    796.42x = 567,931.59
  5. Step 5: Solve for x
    x = 567,931.59/796.42
  6. Step 6: Final answer
    x = 713.11

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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.