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Finding the Fourth Proportional to 481.59, 665.15 and 351.18

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Solution

The fourth proportional to 481.59, 665.15 and 351.18 is: 485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.59 : 665.15 = 351.18 : x
  2. Step 2: Convert to fraction form
    481.59/665.15 = 351.18/x
  3. Step 3: Cross multiply
    481.59x = 665.15 × 351.18
  4. Step 4: Simplify right side
    481.59x = 233,585.62
  5. Step 5: Solve for x
    x = 233,585.62/481.59
  6. Step 6: Final answer
    x = 485.03

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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.