Finding the Fourth Proportional to 207.30, 286.13 and 140.88
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Solution
The fourth proportional to 207.30, 286.13 and 140.88 is: 194.45
Step by Step Solution
- Step 1: Write the proportion equation
207.30 : 286.13 = 140.88 : x - Step 2: Convert to fraction form
207.30/286.13 = 140.88/x - Step 3: Cross multiply
207.30x = 286.13 × 140.88 - Step 4: Simplify right side
207.30x = 40,309.99 - Step 5: Solve for x
x = 40,309.99/207.30 - Step 6: Final answer
x = 194.45
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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.