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Finding the Fourth Proportional to 463.87, 640.16 and 254.07

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Solution

The fourth proportional to 463.87, 640.16 and 254.07 is: 350.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.87 : 640.16 = 254.07 : x
  2. Step 2: Convert to fraction form
    463.87/640.16 = 254.07/x
  3. Step 3: Cross multiply
    463.87x = 640.16 × 254.07
  4. Step 4: Simplify right side
    463.87x = 162,645.45
  5. Step 5: Solve for x
    x = 162,645.45/463.87
  6. Step 6: Final answer
    x = 350.63

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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.