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Finding the Fourth Proportional to 538.21, 806.71 and 230.32

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Solution

The fourth proportional to 538.21, 806.71 and 230.32 is: 345.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.21 : 806.71 = 230.32 : x
  2. Step 2: Convert to fraction form
    538.21/806.71 = 230.32/x
  3. Step 3: Cross multiply
    538.21x = 806.71 × 230.32
  4. Step 4: Simplify right side
    538.21x = 185,801.45
  5. Step 5: Solve for x
    x = 185,801.45/538.21
  6. Step 6: Final answer
    x = 345.22

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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.