Finding the Fourth Proportional to 319.26, 440.55 and 186.44
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Solution
The fourth proportional to 319.26, 440.55 and 186.44 is: 257.27
Step by Step Solution
- Step 1: Write the proportion equation
319.26 : 440.55 = 186.44 : x - Step 2: Convert to fraction form
319.26/440.55 = 186.44/x - Step 3: Cross multiply
319.26x = 440.55 × 186.44 - Step 4: Simplify right side
319.26x = 82,137.24 - Step 5: Solve for x
x = 82,137.24/319.26 - Step 6: Final answer
x = 257.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.