Finding the Fourth Proportional to 135.75, 203.74 and 84.44
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Solution
The fourth proportional to 135.75, 203.74 and 84.44 is: 126.73
Step by Step Solution
- Step 1: Write the proportion equation
135.75 : 203.74 = 84.44 : x - Step 2: Convert to fraction form
135.75/203.74 = 84.44/x - Step 3: Cross multiply
135.75x = 203.74 × 84.44 - Step 4: Simplify right side
135.75x = 17,203.81 - Step 5: Solve for x
x = 17,203.81/135.75 - Step 6: Final answer
x = 126.73
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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.