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Finding the Fourth Proportional to 351.91, 528.17 and 230.32

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Solution

The fourth proportional to 351.91, 528.17 and 230.32 is: 345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.91 : 528.17 = 230.32 : x
  2. Step 2: Convert to fraction form
    351.91/528.17 = 230.32/x
  3. Step 3: Cross multiply
    351.91x = 528.17 × 230.32
  4. Step 4: Simplify right side
    351.91x = 121,645.64
  5. Step 5: Solve for x
    x = 121,645.64/351.91
  6. Step 6: Final answer
    x = 345.68

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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.