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Finding the Fourth Proportional to 452.93, 625.09 and 285

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Solution

The fourth proportional to 452.93, 625.09 and 285 is: 393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.93 : 625.09 = 285 : x
  2. Step 2: Convert to fraction form
    452.93/625.09 = 285/x
  3. Step 3: Cross multiply
    452.93x = 625.09 × 285
  4. Step 4: Simplify right side
    452.93x = 178,149.94
  5. Step 5: Solve for x
    x = 178,149.94/452.93
  6. Step 6: Final answer
    x = 393.33

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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.