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Finding the Fourth Proportional to 336.22, 504.48 and 212.79

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Solution

The fourth proportional to 336.22, 504.48 and 212.79 is: 319.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.22 : 504.48 = 212.79 : x
  2. Step 2: Convert to fraction form
    336.22/504.48 = 212.79/x
  3. Step 3: Cross multiply
    336.22x = 504.48 × 212.79
  4. Step 4: Simplify right side
    336.22x = 107,348.30
  5. Step 5: Solve for x
    x = 107,348.30/336.22
  6. Step 6: Final answer
    x = 319.28

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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.