Finding the Fourth Proportional to 438.19, 657.18 and 164.21
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Solution
The fourth proportional to 438.19, 657.18 and 164.21 is: 246.27
Step by Step Solution
- Step 1: Write the proportion equation
438.19 : 657.18 = 164.21 : x - Step 2: Convert to fraction form
438.19/657.18 = 164.21/x - Step 3: Cross multiply
438.19x = 657.18 × 164.21 - Step 4: Simplify right side
438.19x = 107,912.24 - Step 5: Solve for x
x = 107,912.24/438.19 - Step 6: Final answer
x = 246.27
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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.