Finding the Fourth Proportional to 318.07, 477.07 and 135.44
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Solution
The fourth proportional to 318.07, 477.07 and 135.44 is: 203.14
Step by Step Solution
- Step 1: Write the proportion equation
318.07 : 477.07 = 135.44 : x - Step 2: Convert to fraction form
318.07/477.07 = 135.44/x - Step 3: Cross multiply
318.07x = 477.07 × 135.44 - Step 4: Simplify right side
318.07x = 64,614.19 - Step 5: Solve for x
x = 64,614.19/318.07 - Step 6: Final answer
x = 203.14
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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.