Finding the Fourth Proportional to 318.02, 476.94 and 122.99
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Solution
The fourth proportional to 318.02, 476.94 and 122.99 is: 184.45
Step by Step Solution
- Step 1: Write the proportion equation
318.02 : 476.94 = 122.99 : x - Step 2: Convert to fraction form
318.02/476.94 = 122.99/x - Step 3: Cross multiply
318.02x = 476.94 × 122.99 - Step 4: Simplify right side
318.02x = 58,658.85 - Step 5: Solve for x
x = 58,658.85/318.02 - Step 6: Final answer
x = 184.45
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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.