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Finding the Fourth Proportional to 556.57, 834.97 and 209.89

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Solution

The fourth proportional to 556.57, 834.97 and 209.89 is: 314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.57 : 834.97 = 209.89 : x
  2. Step 2: Convert to fraction form
    556.57/834.97 = 209.89/x
  3. Step 3: Cross multiply
    556.57x = 834.97 × 209.89
  4. Step 4: Simplify right side
    556.57x = 175,251.85
  5. Step 5: Solve for x
    x = 175,251.85/556.57
  6. Step 6: Final answer
    x = 314.88

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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.