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Finding the Fourth Proportional to 597.88, 825.22 and 398.72

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Solution

The fourth proportional to 597.88, 825.22 and 398.72 is: 550.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.88 : 825.22 = 398.72 : x
  2. Step 2: Convert to fraction form
    597.88/825.22 = 398.72/x
  3. Step 3: Cross multiply
    597.88x = 825.22 × 398.72
  4. Step 4: Simplify right side
    597.88x = 329,034.28
  5. Step 5: Solve for x
    x = 329,034.28/597.88
  6. Step 6: Final answer
    x = 550.33

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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.