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Finding the Fourth Proportional to 559.82, 772.58 and 394.07

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Solution

The fourth proportional to 559.82, 772.58 and 394.07 is: 543.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.82 : 772.58 = 394.07 : x
  2. Step 2: Convert to fraction form
    559.82/772.58 = 394.07/x
  3. Step 3: Cross multiply
    559.82x = 772.58 × 394.07
  4. Step 4: Simplify right side
    559.82x = 304,447.72
  5. Step 5: Solve for x
    x = 304,447.72/559.82
  6. Step 6: Final answer
    x = 543.83

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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.