Finding the Fourth Proportional to 265.99, 399.05 and 129.10
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Solution
The fourth proportional to 265.99, 399.05 and 129.10 is: 193.68
Step by Step Solution
- Step 1: Write the proportion equation
265.99 : 399.05 = 129.10 : x - Step 2: Convert to fraction form
265.99/399.05 = 129.10/x - Step 3: Cross multiply
265.99x = 399.05 × 129.10 - Step 4: Simplify right side
265.99x = 51,517.36 - Step 5: Solve for x
x = 51,517.36/265.99 - Step 6: Final answer
x = 193.68
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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.