Finding the Fourth Proportional to 135.19, 201.63 and 115.75
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Solution
The fourth proportional to 135.19, 201.63 and 115.75 is: 172.64
Step by Step Solution
- Step 1: Write the proportion equation
135.19 : 201.63 = 115.75 : x - Step 2: Convert to fraction form
135.19/201.63 = 115.75/x - Step 3: Cross multiply
135.19x = 201.63 × 115.75 - Step 4: Simplify right side
135.19x = 23,338.67 - Step 5: Solve for x
x = 23,338.67/135.19 - Step 6: Final answer
x = 172.64
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.