Finding the Fourth Proportional to 186.99, 257.99 and 108.29
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Solution
The fourth proportional to 186.99, 257.99 and 108.29 is: 149.40
Step by Step Solution
- Step 1: Write the proportion equation
186.99 : 257.99 = 108.29 : x - Step 2: Convert to fraction form
186.99/257.99 = 108.29/x - Step 3: Cross multiply
186.99x = 257.99 × 108.29 - Step 4: Simplify right side
186.99x = 27,936.72 - Step 5: Solve for x
x = 27,936.72/186.99 - Step 6: Final answer
x = 149.40
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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.