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Finding the Fourth Proportional to 225.40, 335.65 and 222.67

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Solution

The fourth proportional to 225.40, 335.65 and 222.67 is: 331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.40 : 335.65 = 222.67 : x
  2. Step 2: Convert to fraction form
    225.40/335.65 = 222.67/x
  3. Step 3: Cross multiply
    225.40x = 335.65 × 222.67
  4. Step 4: Simplify right side
    225.40x = 74,739.19
  5. Step 5: Solve for x
    x = 74,739.19/225.40
  6. Step 6: Final answer
    x = 331.58

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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.