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Finding the Fourth Proportional to 481.04, 720.42 and 275.72

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Solution

The fourth proportional to 481.04, 720.42 and 275.72 is: 412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.04 : 720.42 = 275.72 : x
  2. Step 2: Convert to fraction form
    481.04/720.42 = 275.72/x
  3. Step 3: Cross multiply
    481.04x = 720.42 × 275.72
  4. Step 4: Simplify right side
    481.04x = 198,634.20
  5. Step 5: Solve for x
    x = 198,634.20/481.04
  6. Step 6: Final answer
    x = 412.93

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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.