Finding the Fourth Proportional to 135.23, 186.44 and 91.70
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Solution
The fourth proportional to 135.23, 186.44 and 91.70 is: 126.42
Step by Step Solution
- Step 1: Write the proportion equation
135.23 : 186.44 = 91.70 : x - Step 2: Convert to fraction form
135.23/186.44 = 91.70/x - Step 3: Cross multiply
135.23x = 186.44 × 91.70 - Step 4: Simplify right side
135.23x = 17,095.16 - Step 5: Solve for x
x = 17,095.16/135.23 - Step 6: Final answer
x = 126.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.