Finding the Fourth Proportional to 445.75, 668.91 and 189.25
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Solution
The fourth proportional to 445.75, 668.91 and 189.25 is: 284.00
Step by Step Solution
- Step 1: Write the proportion equation
445.75 : 668.91 = 189.25 : x - Step 2: Convert to fraction form
445.75/668.91 = 189.25/x - Step 3: Cross multiply
445.75x = 668.91 × 189.25 - Step 4: Simplify right side
445.75x = 126,591.22 - Step 5: Solve for x
x = 126,591.22/445.75 - Step 6: Final answer
x = 284.00
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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.