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Finding the Fourth Proportional to 528.55, 792.76 and 220.44

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Solution

The fourth proportional to 528.55, 792.76 and 220.44 is: 330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.55 : 792.76 = 220.44 : x
  2. Step 2: Convert to fraction form
    528.55/792.76 = 220.44/x
  3. Step 3: Cross multiply
    528.55x = 792.76 × 220.44
  4. Step 4: Simplify right side
    528.55x = 174,756.01
  5. Step 5: Solve for x
    x = 174,756.01/528.55
  6. Step 6: Final answer
    x = 330.63

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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.