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Finding the Fourth Proportional to 529.08, 792.90 and 220.56

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Solution

The fourth proportional to 529.08, 792.90 and 220.56 is: 330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.08 : 792.90 = 220.56 : x
  2. Step 2: Convert to fraction form
    529.08/792.90 = 220.56/x
  3. Step 3: Cross multiply
    529.08x = 792.90 × 220.56
  4. Step 4: Simplify right side
    529.08x = 174,882.02
  5. Step 5: Solve for x
    x = 174,882.02/529.08
  6. Step 6: Final answer
    x = 330.54

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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.