Finding the Fourth Proportional to 438.62, 657.86 and 195.08
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Solution
The fourth proportional to 438.62, 657.86 and 195.08 is: 292.58
Step by Step Solution
- Step 1: Write the proportion equation
438.62 : 657.86 = 195.08 : x - Step 2: Convert to fraction form
438.62/657.86 = 195.08/x - Step 3: Cross multiply
438.62x = 657.86 × 195.08 - Step 4: Simplify right side
438.62x = 128,331.06 - Step 5: Solve for x
x = 128,331.06/438.62 - Step 6: Final answer
x = 292.58
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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.