Finding the Fourth Proportional to 438.69, 657.26 and 412.68
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Solution
The fourth proportional to 438.69, 657.26 and 412.68 is: 618.29
Step by Step Solution
- Step 1: Write the proportion equation
438.69 : 657.26 = 412.68 : x - Step 2: Convert to fraction form
438.69/657.26 = 412.68/x - Step 3: Cross multiply
438.69x = 657.26 × 412.68 - Step 4: Simplify right side
438.69x = 271,238.06 - Step 5: Solve for x
x = 271,238.06/438.69 - Step 6: Final answer
x = 618.29
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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.