Finding the Fourth Proportional to 135.70, 187.23 and 91.96
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Solution
The fourth proportional to 135.70, 187.23 and 91.96 is: 126.88
Step by Step Solution
- Step 1: Write the proportion equation
135.70 : 187.23 = 91.96 : x - Step 2: Convert to fraction form
135.70/187.23 = 91.96/x - Step 3: Cross multiply
135.70x = 187.23 × 91.96 - Step 4: Simplify right side
135.70x = 17,217.67 - Step 5: Solve for x
x = 17,217.67/135.70 - Step 6: Final answer
x = 126.88
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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.