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Finding the Fourth Proportional to 694.86, 959.49 and 579.03

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Solution

The fourth proportional to 694.86, 959.49 and 579.03 is: 799.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.86 : 959.49 = 579.03 : x
  2. Step 2: Convert to fraction form
    694.86/959.49 = 579.03/x
  3. Step 3: Cross multiply
    694.86x = 959.49 × 579.03
  4. Step 4: Simplify right side
    694.86x = 555,573.49
  5. Step 5: Solve for x
    x = 555,573.49/694.86
  6. Step 6: Final answer
    x = 799.55

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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.