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Finding the Fourth Proportional to 463.85, 694.99 and 280.69

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Solution

The fourth proportional to 463.85, 694.99 and 280.69 is: 420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.85 : 694.99 = 280.69 : x
  2. Step 2: Convert to fraction form
    463.85/694.99 = 280.69/x
  3. Step 3: Cross multiply
    463.85x = 694.99 × 280.69
  4. Step 4: Simplify right side
    463.85x = 195,076.74
  5. Step 5: Solve for x
    x = 195,076.74/463.85
  6. Step 6: Final answer
    x = 420.56

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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.