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Finding the Fourth Proportional to 441.39, 608.77 and 308.57

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Solution

The fourth proportional to 441.39, 608.77 and 308.57 is: 425.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.39 : 608.77 = 308.57 : x
  2. Step 2: Convert to fraction form
    441.39/608.77 = 308.57/x
  3. Step 3: Cross multiply
    441.39x = 608.77 × 308.57
  4. Step 4: Simplify right side
    441.39x = 187,845.50
  5. Step 5: Solve for x
    x = 187,845.50/441.39
  6. Step 6: Final answer
    x = 425.58

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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.