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Finding the Fourth Proportional to 826.54, 1,241.04 and 340.54

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Solution

The fourth proportional to 826.54, 1,241.04 and 340.54 is: 511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    826.54 : 1,241.04 = 340.54 : x
  2. Step 2: Convert to fraction form
    826.54/1,241.04 = 340.54/x
  3. Step 3: Cross multiply
    826.54x = 1,241.04 × 340.54
  4. Step 4: Simplify right side
    826.54x = 422,623.76
  5. Step 5: Solve for x
    x = 422,623.76/826.54
  6. Step 6: Final answer
    x = 511.32

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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.