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Finding the Fourth Proportional to 538.02, 806.45 and 352.85

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Solution

The fourth proportional to 538.02, 806.45 and 352.85 is: 528.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.02 : 806.45 = 352.85 : x
  2. Step 2: Convert to fraction form
    538.02/806.45 = 352.85/x
  3. Step 3: Cross multiply
    538.02x = 806.45 × 352.85
  4. Step 4: Simplify right side
    538.02x = 284,550.09
  5. Step 5: Solve for x
    x = 284,550.09/538.02
  6. Step 6: Final answer
    x = 528.88

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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.