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Finding the Fourth Proportional to 679.56, 932.79 and 604.23

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Solution

The fourth proportional to 679.56, 932.79 and 604.23 is: 829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.56 : 932.79 = 604.23 : x
  2. Step 2: Convert to fraction form
    679.56/932.79 = 604.23/x
  3. Step 3: Cross multiply
    679.56x = 932.79 × 604.23
  4. Step 4: Simplify right side
    679.56x = 563,619.70
  5. Step 5: Solve for x
    x = 563,619.70/679.56
  6. Step 6: Final answer
    x = 829.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.