Finding the Fourth Proportional to 275.99, 414.08 and 138.99
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Solution
The fourth proportional to 275.99, 414.08 and 138.99 is: 208.53
Step by Step Solution
- Step 1: Write the proportion equation
275.99 : 414.08 = 138.99 : x - Step 2: Convert to fraction form
275.99/414.08 = 138.99/x - Step 3: Cross multiply
275.99x = 414.08 × 138.99 - Step 4: Simplify right side
275.99x = 57,554.36 - Step 5: Solve for x
x = 57,554.36/275.99 - Step 6: Final answer
x = 208.53
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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.