Finding the Fourth Proportional to 408.11, 611.15 and 270.99
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Solution
The fourth proportional to 408.11, 611.15 and 270.99 is: 405.81
Step by Step Solution
- Step 1: Write the proportion equation
408.11 : 611.15 = 270.99 : x - Step 2: Convert to fraction form
408.11/611.15 = 270.99/x - Step 3: Cross multiply
408.11x = 611.15 × 270.99 - Step 4: Simplify right side
408.11x = 165,614.18 - Step 5: Solve for x
x = 165,614.18/408.11 - Step 6: Final answer
x = 405.81
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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.