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Finding the Fourth Proportional to 442.75, 611.07 and 295.75

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Solution

The fourth proportional to 442.75, 611.07 and 295.75 is: 408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.75 : 611.07 = 295.75 : x
  2. Step 2: Convert to fraction form
    442.75/611.07 = 295.75/x
  3. Step 3: Cross multiply
    442.75x = 611.07 × 295.75
  4. Step 4: Simplify right side
    442.75x = 180,723.95
  5. Step 5: Solve for x
    x = 180,723.95/442.75
  6. Step 6: Final answer
    x = 408.19

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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.