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Finding the Fourth Proportional to 650.07, 974.43 and 389.43

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Solution

The fourth proportional to 650.07, 974.43 and 389.43 is: 583.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.07 : 974.43 = 389.43 : x
  2. Step 2: Convert to fraction form
    650.07/974.43 = 389.43/x
  3. Step 3: Cross multiply
    650.07x = 974.43 × 389.43
  4. Step 4: Simplify right side
    650.07x = 379,472.27
  5. Step 5: Solve for x
    x = 379,472.27/650.07
  6. Step 6: Final answer
    x = 583.74

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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.