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Finding the Fourth Proportional to 538.05, 806.97 and 447.33

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Solution

The fourth proportional to 538.05, 806.97 and 447.33 is: 670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.05 : 806.97 = 447.33 : x
  2. Step 2: Convert to fraction form
    538.05/806.97 = 447.33/x
  3. Step 3: Cross multiply
    538.05x = 806.97 × 447.33
  4. Step 4: Simplify right side
    538.05x = 360,981.89
  5. Step 5: Solve for x
    x = 360,981.89/538.05
  6. Step 6: Final answer
    x = 670.91

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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.