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Finding the Fourth Proportional to 706.20, 974.07 and 443.94

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Solution

The fourth proportional to 706.20, 974.07 and 443.94 is: 612.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.20 : 974.07 = 443.94 : x
  2. Step 2: Convert to fraction form
    706.20/974.07 = 443.94/x
  3. Step 3: Cross multiply
    706.20x = 974.07 × 443.94
  4. Step 4: Simplify right side
    706.20x = 432,428.64
  5. Step 5: Solve for x
    x = 432,428.64/706.20
  6. Step 6: Final answer
    x = 612.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.