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Finding the Fourth Proportional to 695.86, 960.26 and 385.36

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Solution

The fourth proportional to 695.86, 960.26 and 385.36 is: 531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.86 : 960.26 = 385.36 : x
  2. Step 2: Convert to fraction form
    695.86/960.26 = 385.36/x
  3. Step 3: Cross multiply
    695.86x = 960.26 × 385.36
  4. Step 4: Simplify right side
    695.86x = 370,045.79
  5. Step 5: Solve for x
    x = 370,045.79/695.86
  6. Step 6: Final answer
    x = 531.78

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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.