Finding the Fourth Proportional to 54.63, 81.72 and 45.99
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Solution
The fourth proportional to 54.63, 81.72 and 45.99 is: 68.80
Step by Step Solution
- Step 1: Write the proportion equation
54.63 : 81.72 = 45.99 : x - Step 2: Convert to fraction form
54.63/81.72 = 45.99/x - Step 3: Cross multiply
54.63x = 81.72 × 45.99 - Step 4: Simplify right side
54.63x = 3,758.30 - Step 5: Solve for x
x = 3,758.30/54.63 - Step 6: Final answer
x = 68.80
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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.