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Finding the Fourth Proportional to 442.82, 611.30 and 295.55

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Solution

The fourth proportional to 442.82, 611.30 and 295.55 is: 408.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.82 : 611.30 = 295.55 : x
  2. Step 2: Convert to fraction form
    442.82/611.30 = 295.55/x
  3. Step 3: Cross multiply
    442.82x = 611.30 × 295.55
  4. Step 4: Simplify right side
    442.82x = 180,668.03
  5. Step 5: Solve for x
    x = 180,668.03/442.82
  6. Step 6: Final answer
    x = 408.00

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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.