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Finding the Fourth Proportional to 695.68, 960.28 and 447.68

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Solution

The fourth proportional to 695.68, 960.28 and 447.68 is: 617.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.68 : 960.28 = 447.68 : x
  2. Step 2: Convert to fraction form
    695.68/960.28 = 447.68/x
  3. Step 3: Cross multiply
    695.68x = 960.28 × 447.68
  4. Step 4: Simplify right side
    695.68x = 429,898.15
  5. Step 5: Solve for x
    x = 429,898.15/695.68
  6. Step 6: Final answer
    x = 617.95

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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.