Finding the Fourth Proportional to 55.50, 82.71 and 54.99
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Solution
The fourth proportional to 55.50, 82.71 and 54.99 is: 81.95
Step by Step Solution
- Step 1: Write the proportion equation
55.50 : 82.71 = 54.99 : x - Step 2: Convert to fraction form
55.50/82.71 = 54.99/x - Step 3: Cross multiply
55.50x = 82.71 × 54.99 - Step 4: Simplify right side
55.50x = 4,548.22 - Step 5: Solve for x
x = 4,548.22/55.50 - Step 6: Final answer
x = 81.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.