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Finding the Fourth Proportional to 216.84, 323.52 and 206.52

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Solution

The fourth proportional to 216.84, 323.52 and 206.52 is: 308.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.84 : 323.52 = 206.52 : x
  2. Step 2: Convert to fraction form
    216.84/323.52 = 206.52/x
  3. Step 3: Cross multiply
    216.84x = 323.52 × 206.52
  4. Step 4: Simplify right side
    216.84x = 66,813.35
  5. Step 5: Solve for x
    x = 66,813.35/216.84
  6. Step 6: Final answer
    x = 308.12

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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.