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Finding the Fourth Proportional to 212.23, 318.21 and 183.34

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Solution

The fourth proportional to 212.23, 318.21 and 183.34 is: 274.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.23 : 318.21 = 183.34 : x
  2. Step 2: Convert to fraction form
    212.23/318.21 = 183.34/x
  3. Step 3: Cross multiply
    212.23x = 318.21 × 183.34
  4. Step 4: Simplify right side
    212.23x = 58,340.62
  5. Step 5: Solve for x
    x = 58,340.62/212.23
  6. Step 6: Final answer
    x = 274.89

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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.