Finding the Fourth Proportional to 135.26, 203.09 and 84.12
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Solution
The fourth proportional to 135.26, 203.09 and 84.12 is: 126.31
Step by Step Solution
- Step 1: Write the proportion equation
135.26 : 203.09 = 84.12 : x - Step 2: Convert to fraction form
135.26/203.09 = 84.12/x - Step 3: Cross multiply
135.26x = 203.09 × 84.12 - Step 4: Simplify right side
135.26x = 17,083.51 - Step 5: Solve for x
x = 17,083.51/135.26 - Step 6: Final answer
x = 126.31
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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.