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Finding the Fourth Proportional to 578.66, 799.36 and 516.47

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Solution

The fourth proportional to 578.66, 799.36 and 516.47 is: 713.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.66 : 799.36 = 516.47 : x
  2. Step 2: Convert to fraction form
    578.66/799.36 = 516.47/x
  3. Step 3: Cross multiply
    578.66x = 799.36 × 516.47
  4. Step 4: Simplify right side
    578.66x = 412,845.46
  5. Step 5: Solve for x
    x = 412,845.46/578.66
  6. Step 6: Final answer
    x = 713.45

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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.