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Finding the Fourth Proportional to 225.56, 336.56 and 203.69

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Solution

The fourth proportional to 225.56, 336.56 and 203.69 is: 303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.56 : 336.56 = 203.69 : x
  2. Step 2: Convert to fraction form
    225.56/336.56 = 203.69/x
  3. Step 3: Cross multiply
    225.56x = 336.56 × 203.69
  4. Step 4: Simplify right side
    225.56x = 68,552.22
  5. Step 5: Solve for x
    x = 68,552.22/225.56
  6. Step 6: Final answer
    x = 303.93

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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.