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Finding the Fourth Proportional to 696.82, 961.74 and 475.63

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Solution

The fourth proportional to 696.82, 961.74 and 475.63 is: 656.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.82 : 961.74 = 475.63 : x
  2. Step 2: Convert to fraction form
    696.82/961.74 = 475.63/x
  3. Step 3: Cross multiply
    696.82x = 961.74 × 475.63
  4. Step 4: Simplify right side
    696.82x = 457,432.40
  5. Step 5: Solve for x
    x = 457,432.40/696.82
  6. Step 6: Final answer
    x = 656.46

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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.