Finding the Fourth Proportional to 134.25, 201.55 and 115.11
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Solution
The fourth proportional to 134.25, 201.55 and 115.11 is: 172.81
Step by Step Solution
- Step 1: Write the proportion equation
134.25 : 201.55 = 115.11 : x - Step 2: Convert to fraction form
134.25/201.55 = 115.11/x - Step 3: Cross multiply
134.25x = 201.55 × 115.11 - Step 4: Simplify right side
134.25x = 23,200.13 - Step 5: Solve for x
x = 23,200.13/134.25 - Step 6: Final answer
x = 172.81
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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.