Finding the Fourth Proportional to 318.87, 476.36 and 202.38
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Solution
The fourth proportional to 318.87, 476.36 and 202.38 is: 302.33
Step by Step Solution
- Step 1: Write the proportion equation
318.87 : 476.36 = 202.38 : x - Step 2: Convert to fraction form
318.87/476.36 = 202.38/x - Step 3: Cross multiply
318.87x = 476.36 × 202.38 - Step 4: Simplify right side
318.87x = 96,403.36 - Step 5: Solve for x
x = 96,403.36/318.87 - Step 6: Final answer
x = 302.33
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.