Finding the Fourth Proportional to 51.24, 76.92 and 45.96
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Solution
The fourth proportional to 51.24, 76.92 and 45.96 is: 68.99
Step by Step Solution
- Step 1: Write the proportion equation
51.24 : 76.92 = 45.96 : x - Step 2: Convert to fraction form
51.24/76.92 = 45.96/x - Step 3: Cross multiply
51.24x = 76.92 × 45.96 - Step 4: Simplify right side
51.24x = 3,535.24 - Step 5: Solve for x
x = 3,535.24/51.24 - Step 6: Final answer
x = 68.99
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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.