Finding the Fourth Proportional to 216.97, 325.20 and 79.97
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Solution
The fourth proportional to 216.97, 325.20 and 79.97 is: 119.86
Step by Step Solution
- Step 1: Write the proportion equation
216.97 : 325.20 = 79.97 : x - Step 2: Convert to fraction form
216.97/325.20 = 79.97/x - Step 3: Cross multiply
216.97x = 325.20 × 79.97 - Step 4: Simplify right side
216.97x = 26,006.24 - Step 5: Solve for x
x = 26,006.24/216.97 - Step 6: Final answer
x = 119.86
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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.