Finding the Fourth Proportional to 420.26, 629.02 and 333.70
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Solution
The fourth proportional to 420.26, 629.02 and 333.70 is: 499.46
Step by Step Solution
- Step 1: Write the proportion equation
420.26 : 629.02 = 333.70 : x - Step 2: Convert to fraction form
420.26/629.02 = 333.70/x - Step 3: Cross multiply
420.26x = 629.02 × 333.70 - Step 4: Simplify right side
420.26x = 209,903.97 - Step 5: Solve for x
x = 209,903.97/420.26 - Step 6: Final answer
x = 499.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.