Finding the Fourth Proportional to 53.81, 74.27 and 33.08
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Solution
The fourth proportional to 53.81, 74.27 and 33.08 is: 45.66
Step by Step Solution
- Step 1: Write the proportion equation
53.81 : 74.27 = 33.08 : x - Step 2: Convert to fraction form
53.81/74.27 = 33.08/x - Step 3: Cross multiply
53.81x = 74.27 × 33.08 - Step 4: Simplify right side
53.81x = 2,456.90 - Step 5: Solve for x
x = 2,456.90/53.81 - Step 6: Final answer
x = 45.66
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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.