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Finding the Fourth Proportional to 626.11, 863.47 and 404.83

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Solution

The fourth proportional to 626.11, 863.47 and 404.83 is: 558.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.11 : 863.47 = 404.83 : x
  2. Step 2: Convert to fraction form
    626.11/863.47 = 404.83/x
  3. Step 3: Cross multiply
    626.11x = 863.47 × 404.83
  4. Step 4: Simplify right side
    626.11x = 349,552.22
  5. Step 5: Solve for x
    x = 349,552.22/626.11
  6. Step 6: Final answer
    x = 558.30

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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.