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Finding the Fourth Proportional to 598.26, 825.22 and 388.09

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Solution

The fourth proportional to 598.26, 825.22 and 388.09 is: 535.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.26 : 825.22 = 388.09 : x
  2. Step 2: Convert to fraction form
    598.26/825.22 = 388.09/x
  3. Step 3: Cross multiply
    598.26x = 825.22 × 388.09
  4. Step 4: Simplify right side
    598.26x = 320,259.63
  5. Step 5: Solve for x
    x = 320,259.63/598.26
  6. Step 6: Final answer
    x = 535.32

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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.