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Finding the Fourth Proportional to 212.04, 294.12 and 206.43

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Solution

The fourth proportional to 212.04, 294.12 and 206.43 is: 286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.04 : 294.12 = 206.43 : x
  2. Step 2: Convert to fraction form
    212.04/294.12 = 206.43/x
  3. Step 3: Cross multiply
    212.04x = 294.12 × 206.43
  4. Step 4: Simplify right side
    212.04x = 60,715.19
  5. Step 5: Solve for x
    x = 60,715.19/212.04
  6. Step 6: Final answer
    x = 286.34

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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.