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Finding the Fourth Proportional to 442.17, 610.25 and 255.62

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Solution

The fourth proportional to 442.17, 610.25 and 255.62 is: 352.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.17 : 610.25 = 255.62 : x
  2. Step 2: Convert to fraction form
    442.17/610.25 = 255.62/x
  3. Step 3: Cross multiply
    442.17x = 610.25 × 255.62
  4. Step 4: Simplify right side
    442.17x = 155,992.11
  5. Step 5: Solve for x
    x = 155,992.11/442.17
  6. Step 6: Final answer
    x = 352.79

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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.