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Finding the Fourth Proportional to 442.82, 611.22 and 263.53

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Solution

The fourth proportional to 442.82, 611.22 and 263.53 is: 363.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.82 : 611.22 = 263.53 : x
  2. Step 2: Convert to fraction form
    442.82/611.22 = 263.53/x
  3. Step 3: Cross multiply
    442.82x = 611.22 × 263.53
  4. Step 4: Simplify right side
    442.82x = 161,074.81
  5. Step 5: Solve for x
    x = 161,074.81/442.82
  6. Step 6: Final answer
    x = 363.75

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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.