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Finding the Fourth Proportional to 481.55, 720.56 and 298.49

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Solution

The fourth proportional to 481.55, 720.56 and 298.49 is: 446.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.55 : 720.56 = 298.49 : x
  2. Step 2: Convert to fraction form
    481.55/720.56 = 298.49/x
  3. Step 3: Cross multiply
    481.55x = 720.56 × 298.49
  4. Step 4: Simplify right side
    481.55x = 215,077.10
  5. Step 5: Solve for x
    x = 215,077.10/481.55
  6. Step 6: Final answer
    x = 446.64

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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.