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Finding the Fourth Proportional to 528.56, 727.20 and 481.92

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Solution

The fourth proportional to 528.56, 727.20 and 481.92 is: 663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.56 : 727.20 = 481.92 : x
  2. Step 2: Convert to fraction form
    528.56/727.20 = 481.92/x
  3. Step 3: Cross multiply
    528.56x = 727.20 × 481.92
  4. Step 4: Simplify right side
    528.56x = 350,452.22
  5. Step 5: Solve for x
    x = 350,452.22/528.56
  6. Step 6: Final answer
    x = 663.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.