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Finding the Fourth Proportional to 452.39, 623.94 and 286.44

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Solution

The fourth proportional to 452.39, 623.94 and 286.44 is: 395.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.39 : 623.94 = 286.44 : x
  2. Step 2: Convert to fraction form
    452.39/623.94 = 286.44/x
  3. Step 3: Cross multiply
    452.39x = 623.94 × 286.44
  4. Step 4: Simplify right side
    452.39x = 178,717.96
  5. Step 5: Solve for x
    x = 178,717.96/452.39
  6. Step 6: Final answer
    x = 395.06

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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.