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Finding the Fourth Proportional to 579.04, 797.32 and 392.44

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Solution

The fourth proportional to 579.04, 797.32 and 392.44 is: 540.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.04 : 797.32 = 392.44 : x
  2. Step 2: Convert to fraction form
    579.04/797.32 = 392.44/x
  3. Step 3: Cross multiply
    579.04x = 797.32 × 392.44
  4. Step 4: Simplify right side
    579.04x = 312,900.26
  5. Step 5: Solve for x
    x = 312,900.26/579.04
  6. Step 6: Final answer
    x = 540.38

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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.