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Finding the Fourth Proportional to 826.20, 1,239.12 and 241.08

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Solution

The fourth proportional to 826.20, 1,239.12 and 241.08 is: 361.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    826.20 : 1,239.12 = 241.08 : x
  2. Step 2: Convert to fraction form
    826.20/1,239.12 = 241.08/x
  3. Step 3: Cross multiply
    826.20x = 1,239.12 × 241.08
  4. Step 4: Simplify right side
    826.20x = 298,727.05
  5. Step 5: Solve for x
    x = 298,727.05/826.20
  6. Step 6: Final answer
    x = 361.57

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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.