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Finding the Fourth Proportional to 462.87, 694.51 and 219.57

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Solution

The fourth proportional to 462.87, 694.51 and 219.57 is: 329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.87 : 694.51 = 219.57 : x
  2. Step 2: Convert to fraction form
    462.87/694.51 = 219.57/x
  3. Step 3: Cross multiply
    462.87x = 694.51 × 219.57
  4. Step 4: Simplify right side
    462.87x = 152,493.56
  5. Step 5: Solve for x
    x = 152,493.56/462.87
  6. Step 6: Final answer
    x = 329.45

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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.