Finding the Fourth Proportional to 324.41, 447.53 and 311.99
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Solution
The fourth proportional to 324.41, 447.53 and 311.99 is: 430.39
Step by Step Solution
- Step 1: Write the proportion equation
324.41 : 447.53 = 311.99 : x - Step 2: Convert to fraction form
324.41/447.53 = 311.99/x - Step 3: Cross multiply
324.41x = 447.53 × 311.99 - Step 4: Simplify right side
324.41x = 139,621.09 - Step 5: Solve for x
x = 139,621.09/324.41 - Step 6: Final answer
x = 430.39
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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.