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Finding the Fourth Proportional to 599.40, 826.16 and 439.61

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Solution

The fourth proportional to 599.40, 826.16 and 439.61 is: 605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.40 : 826.16 = 439.61 : x
  2. Step 2: Convert to fraction form
    599.40/826.16 = 439.61/x
  3. Step 3: Cross multiply
    599.40x = 826.16 × 439.61
  4. Step 4: Simplify right side
    599.40x = 363,181.87
  5. Step 5: Solve for x
    x = 363,181.87/599.40
  6. Step 6: Final answer
    x = 605.91

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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.