Finding the Fourth Proportional to 56.99, 86.00 and 54.05
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Solution
The fourth proportional to 56.99, 86.00 and 54.05 is: 81.56
Step by Step Solution
- Step 1: Write the proportion equation
56.99 : 86.00 = 54.05 : x - Step 2: Convert to fraction form
56.99/86.00 = 54.05/x - Step 3: Cross multiply
56.99x = 86.00 × 54.05 - Step 4: Simplify right side
56.99x = 4,647.60 - Step 5: Solve for x
x = 4,647.60/56.99 - Step 6: Final answer
x = 81.56
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.