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Finding the Fourth Proportional to 438.94, 659.01 and 222.67

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Solution

The fourth proportional to 438.94, 659.01 and 222.67 is: 334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.94 : 659.01 = 222.67 : x
  2. Step 2: Convert to fraction form
    438.94/659.01 = 222.67/x
  3. Step 3: Cross multiply
    438.94x = 659.01 × 222.67
  4. Step 4: Simplify right side
    438.94x = 146,738.46
  5. Step 5: Solve for x
    x = 146,738.46/438.94
  6. Step 6: Final answer
    x = 334.31

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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.