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Finding the Fourth Proportional to 996.73, 1,494.24 and 380

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Solution

The fourth proportional to 996.73, 1,494.24 and 380 is: 569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.73 : 1,494.24 = 380 : x
  2. Step 2: Convert to fraction form
    996.73/1,494.24 = 380/x
  3. Step 3: Cross multiply
    996.73x = 1,494.24 × 380
  4. Step 4: Simplify right side
    996.73x = 567,811.20
  5. Step 5: Solve for x
    x = 567,811.20/996.73
  6. Step 6: Final answer
    x = 569.67

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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.