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Finding the Fourth Proportional to 922.76, 1,383.99 and 306.44

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Solution

The fourth proportional to 922.76, 1,383.99 and 306.44 is: 459.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.76 : 1,383.99 = 306.44 : x
  2. Step 2: Convert to fraction form
    922.76/1,383.99 = 306.44/x
  3. Step 3: Cross multiply
    922.76x = 1,383.99 × 306.44
  4. Step 4: Simplify right side
    922.76x = 424,109.90
  5. Step 5: Solve for x
    x = 424,109.90/922.76
  6. Step 6: Final answer
    x = 459.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.