Finding the Fourth Proportional to 330.05, 495.09 and 113.63
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Solution
The fourth proportional to 330.05, 495.09 and 113.63 is: 170.45
Step by Step Solution
- Step 1: Write the proportion equation
330.05 : 495.09 = 113.63 : x - Step 2: Convert to fraction form
330.05/495.09 = 113.63/x - Step 3: Cross multiply
330.05x = 495.09 × 113.63 - Step 4: Simplify right side
330.05x = 56,257.08 - Step 5: Solve for x
x = 56,257.08/330.05 - Step 6: Final answer
x = 170.45
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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.