Finding the Fourth Proportional to 447.09, 617.09 and 281.19
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Solution
The fourth proportional to 447.09, 617.09 and 281.19 is: 388.11
Step by Step Solution
- Step 1: Write the proportion equation
447.09 : 617.09 = 281.19 : x - Step 2: Convert to fraction form
447.09/617.09 = 281.19/x - Step 3: Cross multiply
447.09x = 617.09 × 281.19 - Step 4: Simplify right side
447.09x = 173,518.13 - Step 5: Solve for x
x = 173,518.13/447.09 - Step 6: Final answer
x = 388.11
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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.