Finding the Fourth Proportional to 274.03, 378.07 and 155.99
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Solution
The fourth proportional to 274.03, 378.07 and 155.99 is: 215.21
Step by Step Solution
- Step 1: Write the proportion equation
274.03 : 378.07 = 155.99 : x - Step 2: Convert to fraction form
274.03/378.07 = 155.99/x - Step 3: Cross multiply
274.03x = 378.07 × 155.99 - Step 4: Simplify right side
274.03x = 58,975.14 - Step 5: Solve for x
x = 58,975.14/274.03 - Step 6: Final answer
x = 215.21
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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.