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Finding the Fourth Proportional to 613.32, 919.90 and 574.44

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Solution

The fourth proportional to 613.32, 919.90 and 574.44 is: 861.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.32 : 919.90 = 574.44 : x
  2. Step 2: Convert to fraction form
    613.32/919.90 = 574.44/x
  3. Step 3: Cross multiply
    613.32x = 919.90 × 574.44
  4. Step 4: Simplify right side
    613.32x = 528,427.36
  5. Step 5: Solve for x
    x = 528,427.36/613.32
  6. Step 6: Final answer
    x = 861.59

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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.