Finding the Fourth Proportional to 484.49, 668.91 and 318.99
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Solution
The fourth proportional to 484.49, 668.91 and 318.99 is: 440.41
Step by Step Solution
- Step 1: Write the proportion equation
484.49 : 668.91 = 318.99 : x - Step 2: Convert to fraction form
484.49/668.91 = 318.99/x - Step 3: Cross multiply
484.49x = 668.91 × 318.99 - Step 4: Simplify right side
484.49x = 213,375.63 - Step 5: Solve for x
x = 213,375.63/484.49 - Step 6: Final answer
x = 440.41
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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.