Finding the Fourth Proportional to 53.75, 74.17 and 30.43
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Solution
The fourth proportional to 53.75, 74.17 and 30.43 is: 41.99
Step by Step Solution
- Step 1: Write the proportion equation
53.75 : 74.17 = 30.43 : x - Step 2: Convert to fraction form
53.75/74.17 = 30.43/x - Step 3: Cross multiply
53.75x = 74.17 × 30.43 - Step 4: Simplify right side
53.75x = 2,256.75 - Step 5: Solve for x
x = 2,256.75/53.75 - Step 6: Final answer
x = 41.99
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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.