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Finding the Fourth Proportional to 336.49, 464.31 and 212.15

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Solution

The fourth proportional to 336.49, 464.31 and 212.15 is: 292.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.49 : 464.31 = 212.15 : x
  2. Step 2: Convert to fraction form
    336.49/464.31 = 212.15/x
  3. Step 3: Cross multiply
    336.49x = 464.31 × 212.15
  4. Step 4: Simplify right side
    336.49x = 98,504.53
  5. Step 5: Solve for x
    x = 98,504.53/336.49
  6. Step 6: Final answer
    x = 292.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.