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Finding the Fourth Proportional to 927.73, 1,392 and 379.95

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Solution

The fourth proportional to 927.73, 1,392 and 379.95 is: 570.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    927.73 : 1,392 = 379.95 : x
  2. Step 2: Convert to fraction form
    927.73/1,392 = 379.95/x
  3. Step 3: Cross multiply
    927.73x = 1,392 × 379.95
  4. Step 4: Simplify right side
    927.73x = 528,890.40
  5. Step 5: Solve for x
    x = 528,890.40/927.73
  6. Step 6: Final answer
    x = 570.09

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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.