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Finding the Fourth Proportional to 696.70, 961.27 and 444.79

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Solution

The fourth proportional to 696.70, 961.27 and 444.79 is: 613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.70 : 961.27 = 444.79 : x
  2. Step 2: Convert to fraction form
    696.70/961.27 = 444.79/x
  3. Step 3: Cross multiply
    696.70x = 961.27 × 444.79
  4. Step 4: Simplify right side
    696.70x = 427,566.24
  5. Step 5: Solve for x
    x = 427,566.24/696.70
  6. Step 6: Final answer
    x = 613.70

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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.