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Finding the Fourth Proportional to 464.11, 640.45 and 254.29

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Solution

The fourth proportional to 464.11, 640.45 and 254.29 is: 350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.11 : 640.45 = 254.29 : x
  2. Step 2: Convert to fraction form
    464.11/640.45 = 254.29/x
  3. Step 3: Cross multiply
    464.11x = 640.45 × 254.29
  4. Step 4: Simplify right side
    464.11x = 162,857.79
  5. Step 5: Solve for x
    x = 162,857.79/464.11
  6. Step 6: Final answer
    x = 350.90

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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.