Finding the Fourth Proportional to 438.43, 657.74 and 194.96
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Solution
The fourth proportional to 438.43, 657.74 and 194.96 is: 292.48
Step by Step Solution
- Step 1: Write the proportion equation
438.43 : 657.74 = 194.96 : x - Step 2: Convert to fraction form
438.43/657.74 = 194.96/x - Step 3: Cross multiply
438.43x = 657.74 × 194.96 - Step 4: Simplify right side
438.43x = 128,232.99 - Step 5: Solve for x
x = 128,232.99/438.43 - Step 6: Final answer
x = 292.48
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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.