Finding the Fourth Proportional to 188.67, 260.39 and 114.99
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Solution
The fourth proportional to 188.67, 260.39 and 114.99 is: 158.70
Step by Step Solution
- Step 1: Write the proportion equation
188.67 : 260.39 = 114.99 : x - Step 2: Convert to fraction form
188.67/260.39 = 114.99/x - Step 3: Cross multiply
188.67x = 260.39 × 114.99 - Step 4: Simplify right side
188.67x = 29,942.25 - Step 5: Solve for x
x = 29,942.25/188.67 - Step 6: Final answer
x = 158.70
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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.