Finding the Fourth Proportional to 419.44, 629.26 and 130.88
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Solution
The fourth proportional to 419.44, 629.26 and 130.88 is: 196.34
Step by Step Solution
- Step 1: Write the proportion equation
419.44 : 629.26 = 130.88 : x - Step 2: Convert to fraction form
419.44/629.26 = 130.88/x - Step 3: Cross multiply
419.44x = 629.26 × 130.88 - Step 4: Simplify right side
419.44x = 82,354.08 - Step 5: Solve for x
x = 82,354.08/419.44 - Step 6: Final answer
x = 196.34
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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.