Finding the Fourth Proportional to 380.62, 570.79 and 197.99
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Solution
The fourth proportional to 380.62, 570.79 and 197.99 is: 296.91
Step by Step Solution
- Step 1: Write the proportion equation
380.62 : 570.79 = 197.99 : x - Step 2: Convert to fraction form
380.62/570.79 = 197.99/x - Step 3: Cross multiply
380.62x = 570.79 × 197.99 - Step 4: Simplify right side
380.62x = 113,010.71 - Step 5: Solve for x
x = 113,010.71/380.62 - Step 6: Final answer
x = 296.91
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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.