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Finding the Fourth Proportional to 618.89, 926.49 and 374.68

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Solution

The fourth proportional to 618.89, 926.49 and 374.68 is: 560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.89 : 926.49 = 374.68 : x
  2. Step 2: Convert to fraction form
    618.89/926.49 = 374.68/x
  3. Step 3: Cross multiply
    618.89x = 926.49 × 374.68
  4. Step 4: Simplify right side
    618.89x = 347,137.27
  5. Step 5: Solve for x
    x = 347,137.27/618.89
  6. Step 6: Final answer
    x = 560.90

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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.