Finding the Fourth Proportional to 201.62, 302.31 and 79.75
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Solution
The fourth proportional to 201.62, 302.31 and 79.75 is: 119.57
Step by Step Solution
- Step 1: Write the proportion equation
201.62 : 302.31 = 79.75 : x - Step 2: Convert to fraction form
201.62/302.31 = 79.75/x - Step 3: Cross multiply
201.62x = 302.31 × 79.75 - Step 4: Simplify right side
201.62x = 24,107.31 - Step 5: Solve for x
x = 24,107.31/201.62 - Step 6: Final answer
x = 119.57
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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.