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Finding the Fourth Proportional to 481.91, 664.18 and 415.35

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Solution

The fourth proportional to 481.91, 664.18 and 415.35 is: 572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.91 : 664.18 = 415.35 : x
  2. Step 2: Convert to fraction form
    481.91/664.18 = 415.35/x
  3. Step 3: Cross multiply
    481.91x = 664.18 × 415.35
  4. Step 4: Simplify right side
    481.91x = 275,867.16
  5. Step 5: Solve for x
    x = 275,867.16/481.91
  6. Step 6: Final answer
    x = 572.45

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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.