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Finding the Fourth Proportional to 528.60, 792.85 and 163.39

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Solution

The fourth proportional to 528.60, 792.85 and 163.39 is: 245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.60 : 792.85 = 163.39 : x
  2. Step 2: Convert to fraction form
    528.60/792.85 = 163.39/x
  3. Step 3: Cross multiply
    528.60x = 792.85 × 163.39
  4. Step 4: Simplify right side
    528.60x = 129,544.93
  5. Step 5: Solve for x
    x = 129,544.93/528.60
  6. Step 6: Final answer
    x = 245.07

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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.