Finding the Fourth Proportional to 427.26, 640.36 and 195.91
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Solution
The fourth proportional to 427.26, 640.36 and 195.91 is: 293.62
Step by Step Solution
- Step 1: Write the proportion equation
427.26 : 640.36 = 195.91 : x - Step 2: Convert to fraction form
427.26/640.36 = 195.91/x - Step 3: Cross multiply
427.26x = 640.36 × 195.91 - Step 4: Simplify right side
427.26x = 125,452.93 - Step 5: Solve for x
x = 125,452.93/427.26 - Step 6: Final answer
x = 293.62
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.