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Finding the Fourth Proportional to 559.45, 772.41 and 349.94

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Solution

The fourth proportional to 559.45, 772.41 and 349.94 is: 483.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.45 : 772.41 = 349.94 : x
  2. Step 2: Convert to fraction form
    559.45/772.41 = 349.94/x
  3. Step 3: Cross multiply
    559.45x = 772.41 × 349.94
  4. Step 4: Simplify right side
    559.45x = 270,297.16
  5. Step 5: Solve for x
    x = 270,297.16/559.45
  6. Step 6: Final answer
    x = 483.15

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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.