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Finding the Fourth Proportional to 695.84, 960.25 and 381.11

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Solution

The fourth proportional to 695.84, 960.25 and 381.11 is: 525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.84 : 960.25 = 381.11 : x
  2. Step 2: Convert to fraction form
    695.84/960.25 = 381.11/x
  3. Step 3: Cross multiply
    695.84x = 960.25 × 381.11
  4. Step 4: Simplify right side
    695.84x = 365,960.88
  5. Step 5: Solve for x
    x = 365,960.88/695.84
  6. Step 6: Final answer
    x = 525.93

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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.