Finding the Fourth Proportional to 51.09, 76.59 and 48.69
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Solution
The fourth proportional to 51.09, 76.59 and 48.69 is: 72.99
Step by Step Solution
- Step 1: Write the proportion equation
51.09 : 76.59 = 48.69 : x - Step 2: Convert to fraction form
51.09/76.59 = 48.69/x - Step 3: Cross multiply
51.09x = 76.59 × 48.69 - Step 4: Simplify right side
51.09x = 3,729.17 - Step 5: Solve for x
x = 3,729.17/51.09 - Step 6: Final answer
x = 72.99
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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.