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Finding the Fourth Proportional to 464.94, 696.90 and 204.78

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Solution

The fourth proportional to 464.94, 696.90 and 204.78 is: 306.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.94 : 696.90 = 204.78 : x
  2. Step 2: Convert to fraction form
    464.94/696.90 = 204.78/x
  3. Step 3: Cross multiply
    464.94x = 696.90 × 204.78
  4. Step 4: Simplify right side
    464.94x = 142,711.18
  5. Step 5: Solve for x
    x = 142,711.18/464.94
  6. Step 6: Final answer
    x = 306.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.