Finding the Fourth Proportional to 188.69, 260.36 and 113.99
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Solution
The fourth proportional to 188.69, 260.36 and 113.99 is: 157.28
Step by Step Solution
- Step 1: Write the proportion equation
188.69 : 260.36 = 113.99 : x - Step 2: Convert to fraction form
188.69/260.36 = 113.99/x - Step 3: Cross multiply
188.69x = 260.36 × 113.99 - Step 4: Simplify right side
188.69x = 29,677.87 - Step 5: Solve for x
x = 29,677.87/188.69 - Step 6: Final answer
x = 157.28
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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.