Finding the Fourth Proportional to 318.44, 474.11 and 313.88
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Solution
The fourth proportional to 318.44, 474.11 and 313.88 is: 467.32
Step by Step Solution
- Step 1: Write the proportion equation
318.44 : 474.11 = 313.88 : x - Step 2: Convert to fraction form
318.44/474.11 = 313.88/x - Step 3: Cross multiply
318.44x = 474.11 × 313.88 - Step 4: Simplify right side
318.44x = 148,813.26 - Step 5: Solve for x
x = 148,813.26/318.44 - Step 6: Final answer
x = 467.32
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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.