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Finding the Fourth Proportional to 463.62, 640.68 and 366.15

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Solution

The fourth proportional to 463.62, 640.68 and 366.15 is: 505.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.62 : 640.68 = 366.15 : x
  2. Step 2: Convert to fraction form
    463.62/640.68 = 366.15/x
  3. Step 3: Cross multiply
    463.62x = 640.68 × 366.15
  4. Step 4: Simplify right side
    463.62x = 234,584.98
  5. Step 5: Solve for x
    x = 234,584.98/463.62
  6. Step 6: Final answer
    x = 505.99

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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.