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Finding the Fourth Proportional to 494.69, 742.08 and 251.06

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Solution

The fourth proportional to 494.69, 742.08 and 251.06 is: 376.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.69 : 742.08 = 251.06 : x
  2. Step 2: Convert to fraction form
    494.69/742.08 = 251.06/x
  3. Step 3: Cross multiply
    494.69x = 742.08 × 251.06
  4. Step 4: Simplify right side
    494.69x = 186,306.60
  5. Step 5: Solve for x
    x = 186,306.60/494.69
  6. Step 6: Final answer
    x = 376.61

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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.