Finding the Fourth Proportional to 207.77, 286.76 and 130.13
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Solution
The fourth proportional to 207.77, 286.76 and 130.13 is: 179.60
Step by Step Solution
- Step 1: Write the proportion equation
207.77 : 286.76 = 130.13 : x - Step 2: Convert to fraction form
207.77/286.76 = 130.13/x - Step 3: Cross multiply
207.77x = 286.76 × 130.13 - Step 4: Simplify right side
207.77x = 37,316.08 - Step 5: Solve for x
x = 37,316.08/207.77 - Step 6: Final answer
x = 179.60
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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.