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Finding the Fourth Proportional to 695.89, 1,042.96 and 329.95

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Solution

The fourth proportional to 695.89, 1,042.96 and 329.95 is: 494.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.89 : 1,042.96 = 329.95 : x
  2. Step 2: Convert to fraction form
    695.89/1,042.96 = 329.95/x
  3. Step 3: Cross multiply
    695.89x = 1,042.96 × 329.95
  4. Step 4: Simplify right side
    695.89x = 344,124.65
  5. Step 5: Solve for x
    x = 344,124.65/695.89
  6. Step 6: Final answer
    x = 494.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.