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Finding the Fourth Proportional to 528.72, 792.93 and 163.31

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Solution

The fourth proportional to 528.72, 792.93 and 163.31 is: 244.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.72 : 792.93 = 163.31 : x
  2. Step 2: Convert to fraction form
    528.72/792.93 = 163.31/x
  3. Step 3: Cross multiply
    528.72x = 792.93 × 163.31
  4. Step 4: Simplify right side
    528.72x = 129,493.40
  5. Step 5: Solve for x
    x = 129,493.40/528.72
  6. Step 6: Final answer
    x = 244.92

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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.