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Finding the Fourth Proportional to 463.12, 694.17 and 280.46

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Solution

The fourth proportional to 463.12, 694.17 and 280.46 is: 420.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.12 : 694.17 = 280.46 : x
  2. Step 2: Convert to fraction form
    463.12/694.17 = 280.46/x
  3. Step 3: Cross multiply
    463.12x = 694.17 × 280.46
  4. Step 4: Simplify right side
    463.12x = 194,688.65
  5. Step 5: Solve for x
    x = 194,688.65/463.12
  6. Step 6: Final answer
    x = 420.39

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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.