Finding the Fourth Proportional to 455.91, 628.26 and 324.69
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Solution
The fourth proportional to 455.91, 628.26 and 324.69 is: 447.43
Step by Step Solution
- Step 1: Write the proportion equation
455.91 : 628.26 = 324.69 : x - Step 2: Convert to fraction form
455.91/628.26 = 324.69/x - Step 3: Cross multiply
455.91x = 628.26 × 324.69 - Step 4: Simplify right side
455.91x = 203,989.74 - Step 5: Solve for x
x = 203,989.74/455.91 - Step 6: Final answer
x = 447.43
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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.