Finding the Fourth Proportional to 201.23, 301.70 and 79.43
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Solution
The fourth proportional to 201.23, 301.70 and 79.43 is: 119.09
Step by Step Solution
- Step 1: Write the proportion equation
201.23 : 301.70 = 79.43 : x - Step 2: Convert to fraction form
201.23/301.70 = 79.43/x - Step 3: Cross multiply
201.23x = 301.70 × 79.43 - Step 4: Simplify right side
201.23x = 23,964.19 - Step 5: Solve for x
x = 23,964.19/201.23 - Step 6: Final answer
x = 119.09
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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.