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Finding the Fourth Proportional to 618.20, 926.09 and 374.12

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Solution

The fourth proportional to 618.20, 926.09 and 374.12 is: 560.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.20 : 926.09 = 374.12 : x
  2. Step 2: Convert to fraction form
    618.20/926.09 = 374.12/x
  3. Step 3: Cross multiply
    618.20x = 926.09 × 374.12
  4. Step 4: Simplify right side
    618.20x = 346,466.92
  5. Step 5: Solve for x
    x = 346,466.92/618.20
  6. Step 6: Final answer
    x = 560.44

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1.5x scale

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.