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Finding the Fourth Proportional to 695.95, 960.41 and 385.45

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Solution

The fourth proportional to 695.95, 960.41 and 385.45 is: 531.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.95 : 960.41 = 385.45 : x
  2. Step 2: Convert to fraction form
    695.95/960.41 = 385.45/x
  3. Step 3: Cross multiply
    695.95x = 960.41 × 385.45
  4. Step 4: Simplify right side
    695.95x = 370,183.31
  5. Step 5: Solve for x
    x = 370,183.31/695.95
  6. Step 6: Final answer
    x = 531.91

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1.5x scale

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.