Finding the Fourth Proportional to 216.99, 325.26 and 79.95
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Solution
The fourth proportional to 216.99, 325.26 and 79.95 is: 119.85
Step by Step Solution
- Step 1: Write the proportion equation
216.99 : 325.26 = 79.95 : x - Step 2: Convert to fraction form
216.99/325.26 = 79.95/x - Step 3: Cross multiply
216.99x = 325.26 × 79.95 - Step 4: Simplify right side
216.99x = 26,005.76 - Step 5: Solve for x
x = 26,005.76/216.99 - Step 6: Final answer
x = 119.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.