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Finding the Fourth Proportional to 559.67, 772.49 and 326.84

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Solution

The fourth proportional to 559.67, 772.49 and 326.84 is: 451.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.67 : 772.49 = 326.84 : x
  2. Step 2: Convert to fraction form
    559.67/772.49 = 326.84/x
  3. Step 3: Cross multiply
    559.67x = 772.49 × 326.84
  4. Step 4: Simplify right side
    559.67x = 252,477.59
  5. Step 5: Solve for x
    x = 252,477.59/559.67
  6. Step 6: Final answer
    x = 451.12

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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.