Finding the Fourth Proportional to 54.35, 74.42 and 54.03
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Solution
The fourth proportional to 54.35, 74.42 and 54.03 is: 73.99
Step by Step Solution
- Step 1: Write the proportion equation
54.35 : 74.42 = 54.03 : x - Step 2: Convert to fraction form
54.35/74.42 = 54.03/x - Step 3: Cross multiply
54.35x = 74.42 × 54.03 - Step 4: Simplify right side
54.35x = 4,021.05 - Step 5: Solve for x
x = 4,021.05/54.35 - Step 6: Final answer
x = 73.99
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.