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Finding the Fourth Proportional to 439.35, 609.93 and 425.98

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Solution

The fourth proportional to 439.35, 609.93 and 425.98 is: 591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.35 : 609.93 = 425.98 : x
  2. Step 2: Convert to fraction form
    439.35/609.93 = 425.98/x
  3. Step 3: Cross multiply
    439.35x = 609.93 × 425.98
  4. Step 4: Simplify right side
    439.35x = 259,817.98
  5. Step 5: Solve for x
    x = 259,817.98/439.35
  6. Step 6: Final answer
    x = 591.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.