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Finding the Fourth Proportional to 696.07, 959.97 and 447.31

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Solution

The fourth proportional to 696.07, 959.97 and 447.31 is: 616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.07 : 959.97 = 447.31 : x
  2. Step 2: Convert to fraction form
    696.07/959.97 = 447.31/x
  3. Step 3: Cross multiply
    696.07x = 959.97 × 447.31
  4. Step 4: Simplify right side
    696.07x = 429,404.18
  5. Step 5: Solve for x
    x = 429,404.18/696.07
  6. Step 6: Final answer
    x = 616.90

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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.