Finding the Fourth Proportional to 318.09, 476.73 and 309.99
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Solution
The fourth proportional to 318.09, 476.73 and 309.99 is: 464.59
Step by Step Solution
- Step 1: Write the proportion equation
318.09 : 476.73 = 309.99 : x - Step 2: Convert to fraction form
318.09/476.73 = 309.99/x - Step 3: Cross multiply
318.09x = 476.73 × 309.99 - Step 4: Simplify right side
318.09x = 147,781.53 - Step 5: Solve for x
x = 147,781.53/318.09 - Step 6: Final answer
x = 464.59
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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.