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Finding the Fourth Proportional to 579.16, 865.31 and 552.28

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Solution

The fourth proportional to 579.16, 865.31 and 552.28 is: 825.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.16 : 865.31 = 552.28 : x
  2. Step 2: Convert to fraction form
    579.16/865.31 = 552.28/x
  3. Step 3: Cross multiply
    579.16x = 865.31 × 552.28
  4. Step 4: Simplify right side
    579.16x = 477,893.41
  5. Step 5: Solve for x
    x = 477,893.41/579.16
  6. Step 6: Final answer
    x = 825.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.