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Finding the Fourth Proportional to 696.91, 961.77 and 382.19

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Solution

The fourth proportional to 696.91, 961.77 and 382.19 is: 527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.91 : 961.77 = 382.19 : x
  2. Step 2: Convert to fraction form
    696.91/961.77 = 382.19/x
  3. Step 3: Cross multiply
    696.91x = 961.77 × 382.19
  4. Step 4: Simplify right side
    696.91x = 367,579.11
  5. Step 5: Solve for x
    x = 367,579.11/696.91
  6. Step 6: Final answer
    x = 527.44

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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.