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Finding the Fourth Proportional to 559.75, 772.55 and 326.83

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Solution

The fourth proportional to 559.75, 772.55 and 326.83 is: 451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.75 : 772.55 = 326.83 : x
  2. Step 2: Convert to fraction form
    559.75/772.55 = 326.83/x
  3. Step 3: Cross multiply
    559.75x = 772.55 × 326.83
  4. Step 4: Simplify right side
    559.75x = 252,492.52
  5. Step 5: Solve for x
    x = 252,492.52/559.75
  6. Step 6: Final answer
    x = 451.08

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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.