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Finding the Fourth Proportional to 216.62, 300.19 and 212.52

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Solution

The fourth proportional to 216.62, 300.19 and 212.52 is: 294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.62 : 300.19 = 212.52 : x
  2. Step 2: Convert to fraction form
    216.62/300.19 = 212.52/x
  3. Step 3: Cross multiply
    216.62x = 300.19 × 212.52
  4. Step 4: Simplify right side
    216.62x = 63,795.12
  5. Step 5: Solve for x
    x = 63,795.12/216.62
  6. Step 6: Final answer
    x = 294.50

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.