Finding the Fourth Proportional to 261.70, 389.98 and 252.99
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Solution
The fourth proportional to 261.70, 389.98 and 252.99 is: 377.01
Step by Step Solution
- Step 1: Write the proportion equation
261.70 : 389.98 = 252.99 : x - Step 2: Convert to fraction form
261.70/389.98 = 252.99/x - Step 3: Cross multiply
261.70x = 389.98 × 252.99 - Step 4: Simplify right side
261.70x = 98,661.36 - Step 5: Solve for x
x = 98,661.36/261.70 - Step 6: Final answer
x = 377.01
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.