Finding the Fourth Proportional to 408.00, 561.92 and 379.30
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Solution
The fourth proportional to 408.00, 561.92 and 379.30 is: 522.39
Step by Step Solution
- Step 1: Write the proportion equation
408.00 : 561.92 = 379.30 : x - Step 2: Convert to fraction form
408.00/561.92 = 379.30/x - Step 3: Cross multiply
408.00x = 561.92 × 379.30 - Step 4: Simplify right side
408.00x = 213,136.14 - Step 5: Solve for x
x = 213,136.14/408.00 - Step 6: Final answer
x = 522.39
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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.