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Finding the Fourth Proportional to 419.75, 579.25 and 233.25

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Solution

The fourth proportional to 419.75, 579.25 and 233.25 is: 321.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.75 : 579.25 = 233.25 : x
  2. Step 2: Convert to fraction form
    419.75/579.25 = 233.25/x
  3. Step 3: Cross multiply
    419.75x = 579.25 × 233.25
  4. Step 4: Simplify right side
    419.75x = 135,110.06
  5. Step 5: Solve for x
    x = 135,110.06/419.75
  6. Step 6: Final answer
    x = 321.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.