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Finding the Fourth Proportional to 1,633.41, 2,449.37 and 658.79

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Solution

The fourth proportional to 1,633.41, 2,449.37 and 658.79 is: 987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.41 : 2,449.37 = 658.79 : x
  2. Step 2: Convert to fraction form
    1,633.41/2,449.37 = 658.79/x
  3. Step 3: Cross multiply
    1,633.41x = 2,449.37 × 658.79
  4. Step 4: Simplify right side
    1,633.41x = 1,613,604.92
  5. Step 5: Solve for x
    x = 1,613,604.92/1,633.41
  6. Step 6: Final answer
    x = 987.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.