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Finding the Fourth Proportional to 484.07, 667.75 and 306.71

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Solution

The fourth proportional to 484.07, 667.75 and 306.71 is: 423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.07 : 667.75 = 306.71 : x
  2. Step 2: Convert to fraction form
    484.07/667.75 = 306.71/x
  3. Step 3: Cross multiply
    484.07x = 667.75 × 306.71
  4. Step 4: Simplify right side
    484.07x = 204,801.50
  5. Step 5: Solve for x
    x = 204,801.50/484.07
  6. Step 6: Final answer
    x = 423.09

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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.