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Finding the Fourth Proportional to 630.44, 944.61 and 219.35

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Solution

The fourth proportional to 630.44, 944.61 and 219.35 is: 328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.44 : 944.61 = 219.35 : x
  2. Step 2: Convert to fraction form
    630.44/944.61 = 219.35/x
  3. Step 3: Cross multiply
    630.44x = 944.61 × 219.35
  4. Step 4: Simplify right side
    630.44x = 207,202.98
  5. Step 5: Solve for x
    x = 207,202.98/630.44
  6. Step 6: Final answer
    x = 328.66

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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.