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Finding the Fourth Proportional to 311.68, 429.60 and 241.62

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Solution

The fourth proportional to 311.68, 429.60 and 241.62 is: 333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.68 : 429.60 = 241.62 : x
  2. Step 2: Convert to fraction form
    311.68/429.60 = 241.62/x
  3. Step 3: Cross multiply
    311.68x = 429.60 × 241.62
  4. Step 4: Simplify right side
    311.68x = 103,799.25
  5. Step 5: Solve for x
    x = 103,799.25/311.68
  6. Step 6: Final answer
    x = 333.03

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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.