Finding the Fourth Proportional to 423.25, 634.84 and 163.21
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Solution
The fourth proportional to 423.25, 634.84 and 163.21 is: 244.80
Step by Step Solution
- Step 1: Write the proportion equation
423.25 : 634.84 = 163.21 : x - Step 2: Convert to fraction form
423.25/634.84 = 163.21/x - Step 3: Cross multiply
423.25x = 634.84 × 163.21 - Step 4: Simplify right side
423.25x = 103,612.24 - Step 5: Solve for x
x = 103,612.24/423.25 - Step 6: Final answer
x = 244.80
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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.