Finding the Fourth Proportional to 438.60, 658.08 and 195.08
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Solution
The fourth proportional to 438.60, 658.08 and 195.08 is: 292.70
Step by Step Solution
- Step 1: Write the proportion equation
438.60 : 658.08 = 195.08 : x - Step 2: Convert to fraction form
438.60/658.08 = 195.08/x - Step 3: Cross multiply
438.60x = 658.08 × 195.08 - Step 4: Simplify right side
438.60x = 128,378.25 - Step 5: Solve for x
x = 128,378.25/438.60 - Step 6: Final answer
x = 292.70
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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.