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Finding the Fourth Proportional to 439.62, 659.61 and 223.26

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Solution

The fourth proportional to 439.62, 659.61 and 223.26 is: 334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.62 : 659.61 = 223.26 : x
  2. Step 2: Convert to fraction form
    439.62/659.61 = 223.26/x
  3. Step 3: Cross multiply
    439.62x = 659.61 × 223.26
  4. Step 4: Simplify right side
    439.62x = 147,264.53
  5. Step 5: Solve for x
    x = 147,264.53/439.62
  6. Step 6: Final answer
    x = 334.98

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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.