Finding the Fourth Proportional to 54.99, 82.35 and 42.75
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Solution
The fourth proportional to 54.99, 82.35 and 42.75 is: 64.02
Step by Step Solution
- Step 1: Write the proportion equation
54.99 : 82.35 = 42.75 : x - Step 2: Convert to fraction form
54.99/82.35 = 42.75/x - Step 3: Cross multiply
54.99x = 82.35 × 42.75 - Step 4: Simplify right side
54.99x = 3,520.46 - Step 5: Solve for x
x = 3,520.46/54.99 - Step 6: Final answer
x = 64.02
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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.