Finding the Fourth Proportional to 330.19, 495.19 and 113.74
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Solution
The fourth proportional to 330.19, 495.19 and 113.74 is: 170.58
Step by Step Solution
- Step 1: Write the proportion equation
330.19 : 495.19 = 113.74 : x - Step 2: Convert to fraction form
330.19/495.19 = 113.74/x - Step 3: Cross multiply
330.19x = 495.19 × 113.74 - Step 4: Simplify right side
330.19x = 56,322.91 - Step 5: Solve for x
x = 56,322.91/330.19 - Step 6: Final answer
x = 170.58
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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.