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Finding the Fourth Proportional to 496.11, 742.55 and 442.11

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Solution

The fourth proportional to 496.11, 742.55 and 442.11 is: 661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.11 : 742.55 = 442.11 : x
  2. Step 2: Convert to fraction form
    496.11/742.55 = 442.11/x
  3. Step 3: Cross multiply
    496.11x = 742.55 × 442.11
  4. Step 4: Simplify right side
    496.11x = 328,286.57
  5. Step 5: Solve for x
    x = 328,286.57/496.11
  6. Step 6: Final answer
    x = 661.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.