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Finding the Fourth Proportional to 481.05, 717.75 and 445.68

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Solution

The fourth proportional to 481.05, 717.75 and 445.68 is: 664.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.05 : 717.75 = 445.68 : x
  2. Step 2: Convert to fraction form
    481.05/717.75 = 445.68/x
  3. Step 3: Cross multiply
    481.05x = 717.75 × 445.68
  4. Step 4: Simplify right side
    481.05x = 319,886.82
  5. Step 5: Solve for x
    x = 319,886.82/481.05
  6. Step 6: Final answer
    x = 664.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.