Finding the Fourth Proportional to 56.12, 77.48 and 54.99
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Solution
The fourth proportional to 56.12, 77.48 and 54.99 is: 75.90
Step by Step Solution
- Step 1: Write the proportion equation
56.12 : 77.48 = 54.99 : x - Step 2: Convert to fraction form
56.12/77.48 = 54.99/x - Step 3: Cross multiply
56.12x = 77.48 × 54.99 - Step 4: Simplify right side
56.12x = 4,259.98 - Step 5: Solve for x
x = 4,259.98/56.12 - Step 6: Final answer
x = 75.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.