Finding the Fourth Proportional to 135.81, 203.26 and 84.49
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Solution
The fourth proportional to 135.81, 203.26 and 84.49 is: 126.45
Step by Step Solution
- Step 1: Write the proportion equation
135.81 : 203.26 = 84.49 : x - Step 2: Convert to fraction form
135.81/203.26 = 84.49/x - Step 3: Cross multiply
135.81x = 203.26 × 84.49 - Step 4: Simplify right side
135.81x = 17,173.44 - Step 5: Solve for x
x = 17,173.44/135.81 - Step 6: Final answer
x = 126.45
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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.