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Finding the Fourth Proportional to 481.44, 725.64 and 455.04

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Solution

The fourth proportional to 481.44, 725.64 and 455.04 is: 685.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.44 : 725.64 = 455.04 : x
  2. Step 2: Convert to fraction form
    481.44/725.64 = 455.04/x
  3. Step 3: Cross multiply
    481.44x = 725.64 × 455.04
  4. Step 4: Simplify right side
    481.44x = 330,195.23
  5. Step 5: Solve for x
    x = 330,195.23/481.44
  6. Step 6: Final answer
    x = 685.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.