Finding the Fourth Proportional to 285.21, 427.68 and 163.26
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Solution
The fourth proportional to 285.21, 427.68 and 163.26 is: 244.81
Step by Step Solution
- Step 1: Write the proportion equation
285.21 : 427.68 = 163.26 : x - Step 2: Convert to fraction form
285.21/427.68 = 163.26/x - Step 3: Cross multiply
285.21x = 427.68 × 163.26 - Step 4: Simplify right side
285.21x = 69,823.04 - Step 5: Solve for x
x = 69,823.04/285.21 - Step 6: Final answer
x = 244.81
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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.