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Finding the Fourth Proportional to 323.88, 443.87 and 317.80

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Solution

The fourth proportional to 323.88, 443.87 and 317.80 is: 435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.88 : 443.87 = 317.80 : x
  2. Step 2: Convert to fraction form
    323.88/443.87 = 317.80/x
  3. Step 3: Cross multiply
    323.88x = 443.87 × 317.80
  4. Step 4: Simplify right side
    323.88x = 141,061.89
  5. Step 5: Solve for x
    x = 141,061.89/323.88
  6. Step 6: Final answer
    x = 435.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.