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Finding the Fourth Proportional to 613.67, 919.22 and 370.07

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Solution

The fourth proportional to 613.67, 919.22 and 370.07 is: 554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.67 : 919.22 = 370.07 : x
  2. Step 2: Convert to fraction form
    613.67/919.22 = 370.07/x
  3. Step 3: Cross multiply
    613.67x = 919.22 × 370.07
  4. Step 4: Simplify right side
    613.67x = 340,171.15
  5. Step 5: Solve for x
    x = 340,171.15/613.67
  6. Step 6: Final answer
    x = 554.32

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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.