Finding the Fourth Proportional to 315.99, 436.04 and 176.09
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Solution
The fourth proportional to 315.99, 436.04 and 176.09 is: 242.99
Step by Step Solution
- Step 1: Write the proportion equation
315.99 : 436.04 = 176.09 : x - Step 2: Convert to fraction form
315.99/436.04 = 176.09/x - Step 3: Cross multiply
315.99x = 436.04 × 176.09 - Step 4: Simplify right side
315.99x = 76,782.28 - Step 5: Solve for x
x = 76,782.28/315.99 - Step 6: Final answer
x = 242.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.