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Finding the Fourth Proportional to 481.16, 720.84 and 298.64

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Solution

The fourth proportional to 481.16, 720.84 and 298.64 is: 447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.16 : 720.84 = 298.64 : x
  2. Step 2: Convert to fraction form
    481.16/720.84 = 298.64/x
  3. Step 3: Cross multiply
    481.16x = 720.84 × 298.64
  4. Step 4: Simplify right side
    481.16x = 215,271.66
  5. Step 5: Solve for x
    x = 215,271.66/481.16
  6. Step 6: Final answer
    x = 447.40

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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.