Finding the Fourth Proportional to 324.43, 447.18 and 274.75
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Solution
The fourth proportional to 324.43, 447.18 and 274.75 is: 378.70
Step by Step Solution
- Step 1: Write the proportion equation
324.43 : 447.18 = 274.75 : x - Step 2: Convert to fraction form
324.43/447.18 = 274.75/x - Step 3: Cross multiply
324.43x = 447.18 × 274.75 - Step 4: Simplify right side
324.43x = 122,862.71 - Step 5: Solve for x
x = 122,862.71/324.43 - Step 6: Final answer
x = 378.70
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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.