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Finding the Fourth Proportional to 494.10, 742.23 and 477.69

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Solution

The fourth proportional to 494.10, 742.23 and 477.69 is: 717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.10 : 742.23 = 477.69 : x
  2. Step 2: Convert to fraction form
    494.10/742.23 = 477.69/x
  3. Step 3: Cross multiply
    494.10x = 742.23 × 477.69
  4. Step 4: Simplify right side
    494.10x = 354,555.85
  5. Step 5: Solve for x
    x = 354,555.85/494.10
  6. Step 6: Final answer
    x = 717.58

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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.