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Finding the Fourth Proportional to 922.41, 1,382.79 and 344.88

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Solution

The fourth proportional to 922.41, 1,382.79 and 344.88 is: 517.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.41 : 1,382.79 = 344.88 : x
  2. Step 2: Convert to fraction form
    922.41/1,382.79 = 344.88/x
  3. Step 3: Cross multiply
    922.41x = 1,382.79 × 344.88
  4. Step 4: Simplify right side
    922.41x = 476,896.62
  5. Step 5: Solve for x
    x = 476,896.62/922.41
  6. Step 6: Final answer
    x = 517.01

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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.