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Finding the Fourth Proportional to 528.27, 792.39 and 239.70

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Solution

The fourth proportional to 528.27, 792.39 and 239.70 is: 359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.27 : 792.39 = 239.70 : x
  2. Step 2: Convert to fraction form
    528.27/792.39 = 239.70/x
  3. Step 3: Cross multiply
    528.27x = 792.39 × 239.70
  4. Step 4: Simplify right side
    528.27x = 189,935.88
  5. Step 5: Solve for x
    x = 189,935.88/528.27
  6. Step 6: Final answer
    x = 359.54

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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.