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Finding the Fourth Proportional to 696.80, 961.57 and 382.06

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Solution

The fourth proportional to 696.80, 961.57 and 382.06 is: 527.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.80 : 961.57 = 382.06 : x
  2. Step 2: Convert to fraction form
    696.80/961.57 = 382.06/x
  3. Step 3: Cross multiply
    696.80x = 961.57 × 382.06
  4. Step 4: Simplify right side
    696.80x = 367,378.89
  5. Step 5: Solve for x
    x = 367,378.89/696.80
  6. Step 6: Final answer
    x = 527.24

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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.