Finding the Fourth Proportional to 318.99, 440.30 and 188.08
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Solution
The fourth proportional to 318.99, 440.30 and 188.08 is: 259.60
Step by Step Solution
- Step 1: Write the proportion equation
318.99 : 440.30 = 188.08 : x - Step 2: Convert to fraction form
318.99/440.30 = 188.08/x - Step 3: Cross multiply
318.99x = 440.30 × 188.08 - Step 4: Simplify right side
318.99x = 82,810.99 - Step 5: Solve for x
x = 82,810.99/318.99 - Step 6: Final answer
x = 259.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.