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Finding the Fourth Proportional to 695.84, 961.36 and 690.96

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Solution

The fourth proportional to 695.84, 961.36 and 690.96 is: 954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.84 : 961.36 = 690.96 : x
  2. Step 2: Convert to fraction form
    695.84/961.36 = 690.96/x
  3. Step 3: Cross multiply
    695.84x = 961.36 × 690.96
  4. Step 4: Simplify right side
    695.84x = 664,261.31
  5. Step 5: Solve for x
    x = 664,261.31/695.84
  6. Step 6: Final answer
    x = 954.62

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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.