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Finding the Fourth Proportional to 483.39, 667.14 and 317.67

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Solution

The fourth proportional to 483.39, 667.14 and 317.67 is: 438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.39 : 667.14 = 317.67 : x
  2. Step 2: Convert to fraction form
    483.39/667.14 = 317.67/x
  3. Step 3: Cross multiply
    483.39x = 667.14 × 317.67
  4. Step 4: Simplify right side
    483.39x = 211,930.36
  5. Step 5: Solve for x
    x = 211,930.36/483.39
  6. Step 6: Final answer
    x = 438.43

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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.