Finding the Fourth Proportional to 260.29, 389.91 and 157.26
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Solution
The fourth proportional to 260.29, 389.91 and 157.26 is: 235.57
Step by Step Solution
- Step 1: Write the proportion equation
260.29 : 389.91 = 157.26 : x - Step 2: Convert to fraction form
260.29/389.91 = 157.26/x - Step 3: Cross multiply
260.29x = 389.91 × 157.26 - Step 4: Simplify right side
260.29x = 61,317.25 - Step 5: Solve for x
x = 61,317.25/260.29 - Step 6: Final answer
x = 235.57
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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.