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Finding the Fourth Proportional to 494.49, 738.18 and 477.39

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Solution

The fourth proportional to 494.49, 738.18 and 477.39 is: 712.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.49 : 738.18 = 477.39 : x
  2. Step 2: Convert to fraction form
    494.49/738.18 = 477.39/x
  3. Step 3: Cross multiply
    494.49x = 738.18 × 477.39
  4. Step 4: Simplify right side
    494.49x = 352,399.75
  5. Step 5: Solve for x
    x = 352,399.75/494.49
  6. Step 6: Final answer
    x = 712.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.