Finding the Fourth Proportional to 125.36, 187.99 and 84.79
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Solution
The fourth proportional to 125.36, 187.99 and 84.79 is: 127.15
Step by Step Solution
- Step 1: Write the proportion equation
125.36 : 187.99 = 84.79 : x - Step 2: Convert to fraction form
125.36/187.99 = 84.79/x - Step 3: Cross multiply
125.36x = 187.99 × 84.79 - Step 4: Simplify right side
125.36x = 15,939.70 - Step 5: Solve for x
x = 15,939.70/125.36 - Step 6: Final answer
x = 127.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.