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Finding the Fourth Proportional to 224.65, 336.57 and 215.74

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Solution

The fourth proportional to 224.65, 336.57 and 215.74 is: 323.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.65 : 336.57 = 215.74 : x
  2. Step 2: Convert to fraction form
    224.65/336.57 = 215.74/x
  3. Step 3: Cross multiply
    224.65x = 336.57 × 215.74
  4. Step 4: Simplify right side
    224.65x = 72,611.61
  5. Step 5: Solve for x
    x = 72,611.61/224.65
  6. Step 6: Final answer
    x = 323.22

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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.