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Finding the Fourth Proportional to 481.08, 717.63 and 422.76

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Solution

The fourth proportional to 481.08, 717.63 and 422.76 is: 630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.08 : 717.63 = 422.76 : x
  2. Step 2: Convert to fraction form
    481.08/717.63 = 422.76/x
  3. Step 3: Cross multiply
    481.08x = 717.63 × 422.76
  4. Step 4: Simplify right side
    481.08x = 303,385.26
  5. Step 5: Solve for x
    x = 303,385.26/481.08
  6. Step 6: Final answer
    x = 630.63

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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.