Finding the Fourth Proportional to 53.93, 80.80 and 51.38
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Solution
The fourth proportional to 53.93, 80.80 and 51.38 is: 76.99
Step by Step Solution
- Step 1: Write the proportion equation
53.93 : 80.80 = 51.38 : x - Step 2: Convert to fraction form
53.93/80.80 = 51.38/x - Step 3: Cross multiply
53.93x = 80.80 × 51.38 - Step 4: Simplify right side
53.93x = 4,151.73 - Step 5: Solve for x
x = 4,151.73/53.93 - Step 6: Final answer
x = 76.99
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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.