Finding the Fourth Proportional to 51.21, 76.98 and 48.99
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Solution
The fourth proportional to 51.21, 76.98 and 48.99 is: 73.64
Step by Step Solution
- Step 1: Write the proportion equation
51.21 : 76.98 = 48.99 : x - Step 2: Convert to fraction form
51.21/76.98 = 48.99/x - Step 3: Cross multiply
51.21x = 76.98 × 48.99 - Step 4: Simplify right side
51.21x = 3,771.25 - Step 5: Solve for x
x = 3,771.25/51.21 - Step 6: Final answer
x = 73.64
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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.