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Finding the Fourth Proportional to 217.01, 323.19 and 211.23

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Solution

The fourth proportional to 217.01, 323.19 and 211.23 is: 314.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.01 : 323.19 = 211.23 : x
  2. Step 2: Convert to fraction form
    217.01/323.19 = 211.23/x
  3. Step 3: Cross multiply
    217.01x = 323.19 × 211.23
  4. Step 4: Simplify right side
    217.01x = 68,267.42
  5. Step 5: Solve for x
    x = 68,267.42/217.01
  6. Step 6: Final answer
    x = 314.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.