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Finding the Fourth Proportional to 695.62, 960.60 and 447.38

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Solution

The fourth proportional to 695.62, 960.60 and 447.38 is: 617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.62 : 960.60 = 447.38 : x
  2. Step 2: Convert to fraction form
    695.62/960.60 = 447.38/x
  3. Step 3: Cross multiply
    695.62x = 960.60 × 447.38
  4. Step 4: Simplify right side
    695.62x = 429,746.19
  5. Step 5: Solve for x
    x = 429,746.19/695.62
  6. Step 6: Final answer
    x = 617.79

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Double scale
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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.