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Finding the Fourth Proportional to 559.68, 772.76 and 394.44

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Solution

The fourth proportional to 559.68, 772.76 and 394.44 is: 544.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.68 : 772.76 = 394.44 : x
  2. Step 2: Convert to fraction form
    559.68/772.76 = 394.44/x
  3. Step 3: Cross multiply
    559.68x = 772.76 × 394.44
  4. Step 4: Simplify right side
    559.68x = 304,807.45
  5. Step 5: Solve for x
    x = 304,807.45/559.68
  6. Step 6: Final answer
    x = 544.61

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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.