Finding the Fourth Proportional to 54.86, 76.02 and 53.99
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Solution
The fourth proportional to 54.86, 76.02 and 53.99 is: 74.81
Step by Step Solution
- Step 1: Write the proportion equation
54.86 : 76.02 = 53.99 : x - Step 2: Convert to fraction form
54.86/76.02 = 53.99/x - Step 3: Cross multiply
54.86x = 76.02 × 53.99 - Step 4: Simplify right side
54.86x = 4,103.94 - Step 5: Solve for x
x = 4,103.94/54.86 - Step 6: Final answer
x = 74.81
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.