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Finding the Fourth Proportional to 442.03, 610.03 and 255.58

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Solution

The fourth proportional to 442.03, 610.03 and 255.58 is: 352.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.03 : 610.03 = 255.58 : x
  2. Step 2: Convert to fraction form
    442.03/610.03 = 255.58/x
  3. Step 3: Cross multiply
    442.03x = 610.03 × 255.58
  4. Step 4: Simplify right side
    442.03x = 155,909.30
  5. Step 5: Solve for x
    x = 155,909.30/442.03
  6. Step 6: Final answer
    x = 352.71

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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.