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Finding the Fourth Proportional to 613.60, 919.32 and 370.24

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Solution

The fourth proportional to 613.60, 919.32 and 370.24 is: 554.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.60 : 919.32 = 370.24 : x
  2. Step 2: Convert to fraction form
    613.60/919.32 = 370.24/x
  3. Step 3: Cross multiply
    613.60x = 919.32 × 370.24
  4. Step 4: Simplify right side
    613.60x = 340,369.04
  5. Step 5: Solve for x
    x = 340,369.04/613.60
  6. Step 6: Final answer
    x = 554.71

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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.