Finding the Fourth Proportional to 201.48, 302.26 and 79.74
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Solution
The fourth proportional to 201.48, 302.26 and 79.74 is: 119.63
Step by Step Solution
- Step 1: Write the proportion equation
201.48 : 302.26 = 79.74 : x - Step 2: Convert to fraction form
201.48/302.26 = 79.74/x - Step 3: Cross multiply
201.48x = 302.26 × 79.74 - Step 4: Simplify right side
201.48x = 24,102.21 - Step 5: Solve for x
x = 24,102.21/201.48 - Step 6: Final answer
x = 119.63
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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.