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Finding the Fourth Proportional to 559.14, 768.96 and 448.44

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Solution

The fourth proportional to 559.14, 768.96 and 448.44 is: 616.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.14 : 768.96 = 448.44 : x
  2. Step 2: Convert to fraction form
    559.14/768.96 = 448.44/x
  3. Step 3: Cross multiply
    559.14x = 768.96 × 448.44
  4. Step 4: Simplify right side
    559.14x = 344,832.42
  5. Step 5: Solve for x
    x = 344,832.42/559.14
  6. Step 6: Final answer
    x = 616.72

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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.