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Finding the Fourth Proportional to 239.66, 357.21 and 225.99

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Solution

The fourth proportional to 239.66, 357.21 and 225.99 is: 336.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.66 : 357.21 = 225.99 : x
  2. Step 2: Convert to fraction form
    239.66/357.21 = 225.99/x
  3. Step 3: Cross multiply
    239.66x = 357.21 × 225.99
  4. Step 4: Simplify right side
    239.66x = 80,725.89
  5. Step 5: Solve for x
    x = 80,725.89/239.66
  6. Step 6: Final answer
    x = 336.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.