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Finding the Fourth Proportional to 696.49, 961.26 and 431.08

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Solution

The fourth proportional to 696.49, 961.26 and 431.08 is: 594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.49 : 961.26 = 431.08 : x
  2. Step 2: Convert to fraction form
    696.49/961.26 = 431.08/x
  3. Step 3: Cross multiply
    696.49x = 961.26 × 431.08
  4. Step 4: Simplify right side
    696.49x = 414,379.96
  5. Step 5: Solve for x
    x = 414,379.96/696.49
  6. Step 6: Final answer
    x = 594.95

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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.