Finding the Fourth Proportional to 186.99, 280.67 and 129.08
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Solution
The fourth proportional to 186.99, 280.67 and 129.08 is: 193.74
Step by Step Solution
- Step 1: Write the proportion equation
186.99 : 280.67 = 129.08 : x - Step 2: Convert to fraction form
186.99/280.67 = 129.08/x - Step 3: Cross multiply
186.99x = 280.67 × 129.08 - Step 4: Simplify right side
186.99x = 36,226.83 - Step 5: Solve for x
x = 36,226.83/186.99 - Step 6: Final answer
x = 193.74
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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.