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Finding the Fourth Proportional to 679.29, 935.19 and 568.59

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Solution

The fourth proportional to 679.29, 935.19 and 568.59 is: 782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.29 : 935.19 = 568.59 : x
  2. Step 2: Convert to fraction form
    679.29/935.19 = 568.59/x
  3. Step 3: Cross multiply
    679.29x = 935.19 × 568.59
  4. Step 4: Simplify right side
    679.29x = 531,739.68
  5. Step 5: Solve for x
    x = 531,739.68/679.29
  6. Step 6: Final answer
    x = 782.79

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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.