Finding the Fourth Proportional to 438.26, 657.33 and 113.63
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Solution
The fourth proportional to 438.26, 657.33 and 113.63 is: 170.43
Step by Step Solution
- Step 1: Write the proportion equation
438.26 : 657.33 = 113.63 : x - Step 2: Convert to fraction form
438.26/657.33 = 113.63/x - Step 3: Cross multiply
438.26x = 657.33 × 113.63 - Step 4: Simplify right side
438.26x = 74,692.41 - Step 5: Solve for x
x = 74,692.41/438.26 - Step 6: Final answer
x = 170.43
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.