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Finding the Fourth Proportional to 559.43, 771.91 and 326.51

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Solution

The fourth proportional to 559.43, 771.91 and 326.51 is: 450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.43 : 771.91 = 326.51 : x
  2. Step 2: Convert to fraction form
    559.43/771.91 = 326.51/x
  3. Step 3: Cross multiply
    559.43x = 771.91 × 326.51
  4. Step 4: Simplify right side
    559.43x = 252,034.70
  5. Step 5: Solve for x
    x = 252,034.70/559.43
  6. Step 6: Final answer
    x = 450.52

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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.