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Finding the Fourth Proportional to 630.22, 943.89 and 446.62

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Solution

The fourth proportional to 630.22, 943.89 and 446.62 is: 668.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.22 : 943.89 = 446.62 : x
  2. Step 2: Convert to fraction form
    630.22/943.89 = 446.62/x
  3. Step 3: Cross multiply
    630.22x = 943.89 × 446.62
  4. Step 4: Simplify right side
    630.22x = 421,560.15
  5. Step 5: Solve for x
    x = 421,560.15/630.22
  6. Step 6: Final answer
    x = 668.91

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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.