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Finding the Fourth Proportional to 528.88, 792.60 and 392.44

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Solution

The fourth proportional to 528.88, 792.60 and 392.44 is: 588.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.88 : 792.60 = 392.44 : x
  2. Step 2: Convert to fraction form
    528.88/792.60 = 392.44/x
  3. Step 3: Cross multiply
    528.88x = 792.60 × 392.44
  4. Step 4: Simplify right side
    528.88x = 311,047.94
  5. Step 5: Solve for x
    x = 311,047.94/528.88
  6. Step 6: Final answer
    x = 588.13

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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.