Finding the Fourth Proportional to 260.09, 389.45 and 157.23
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Solution
The fourth proportional to 260.09, 389.45 and 157.23 is: 235.43
Step by Step Solution
- Step 1: Write the proportion equation
260.09 : 389.45 = 157.23 : x - Step 2: Convert to fraction form
260.09/389.45 = 157.23/x - Step 3: Cross multiply
260.09x = 389.45 × 157.23 - Step 4: Simplify right side
260.09x = 61,232.44 - Step 5: Solve for x
x = 61,232.44/260.09 - Step 6: Final answer
x = 235.43
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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.