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Finding the Fourth Proportional to 452.58, 626.20 and 394.49

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Solution

The fourth proportional to 452.58, 626.20 and 394.49 is: 545.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.58 : 626.20 = 394.49 : x
  2. Step 2: Convert to fraction form
    452.58/626.20 = 394.49/x
  3. Step 3: Cross multiply
    452.58x = 626.20 × 394.49
  4. Step 4: Simplify right side
    452.58x = 247,029.64
  5. Step 5: Solve for x
    x = 247,029.64/452.58
  6. Step 6: Final answer
    x = 545.83

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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.