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Finding the Fourth Proportional to 224.32, 336.17 and 212.00

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Solution

The fourth proportional to 224.32, 336.17 and 212.00 is: 317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.32 : 336.17 = 212.00 : x
  2. Step 2: Convert to fraction form
    224.32/336.17 = 212.00/x
  3. Step 3: Cross multiply
    224.32x = 336.17 × 212.00
  4. Step 4: Simplify right side
    224.32x = 71,266.14
  5. Step 5: Solve for x
    x = 71,266.14/224.32
  6. Step 6: Final answer
    x = 317.70

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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.