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Finding the Fourth Proportional to 598.88, 825.74 and 439.31

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Solution

The fourth proportional to 598.88, 825.74 and 439.31 is: 605.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.88 : 825.74 = 439.31 : x
  2. Step 2: Convert to fraction form
    598.88/825.74 = 439.31/x
  3. Step 3: Cross multiply
    598.88x = 825.74 × 439.31
  4. Step 4: Simplify right side
    598.88x = 362,749.51
  5. Step 5: Solve for x
    x = 362,749.51/598.88
  6. Step 6: Final answer
    x = 605.72

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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.