Finding the Fourth Proportional to 287.63, 396.99 and 171.26
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Solution
The fourth proportional to 287.63, 396.99 and 171.26 is: 236.37
Step by Step Solution
- Step 1: Write the proportion equation
287.63 : 396.99 = 171.26 : x - Step 2: Convert to fraction form
287.63/396.99 = 171.26/x - Step 3: Cross multiply
287.63x = 396.99 × 171.26 - Step 4: Simplify right side
287.63x = 67,986.52 - Step 5: Solve for x
x = 67,986.52/287.63 - Step 6: Final answer
x = 236.37
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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.