Finding the Fourth Proportional to 260.11, 390.71 and 163.99
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Solution
The fourth proportional to 260.11, 390.71 and 163.99 is: 246.33
Step by Step Solution
- Step 1: Write the proportion equation
260.11 : 390.71 = 163.99 : x - Step 2: Convert to fraction form
260.11/390.71 = 163.99/x - Step 3: Cross multiply
260.11x = 390.71 × 163.99 - Step 4: Simplify right side
260.11x = 64,072.53 - Step 5: Solve for x
x = 64,072.53/260.11 - Step 6: Final answer
x = 246.33
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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.