Finding the Fourth Proportional to 262.11, 392.99 and 107.99
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Solution
The fourth proportional to 262.11, 392.99 and 107.99 is: 161.91
Step by Step Solution
- Step 1: Write the proportion equation
262.11 : 392.99 = 107.99 : x - Step 2: Convert to fraction form
262.11/392.99 = 107.99/x - Step 3: Cross multiply
262.11x = 392.99 × 107.99 - Step 4: Simplify right side
262.11x = 42,439.06 - Step 5: Solve for x
x = 42,439.06/262.11 - Step 6: Final answer
x = 161.91
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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.