Finding the Fourth Proportional to 324.21, 486.09 and 118.75
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Solution
The fourth proportional to 324.21, 486.09 and 118.75 is: 178.04
Step by Step Solution
- Step 1: Write the proportion equation
324.21 : 486.09 = 118.75 : x - Step 2: Convert to fraction form
324.21/486.09 = 118.75/x - Step 3: Cross multiply
324.21x = 486.09 × 118.75 - Step 4: Simplify right side
324.21x = 57,723.19 - Step 5: Solve for x
x = 57,723.19/324.21 - Step 6: Final answer
x = 178.04
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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.