Finding the Fourth Proportional to 207.43, 286.40 and 133.79
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Solution
The fourth proportional to 207.43, 286.40 and 133.79 is: 184.72
Step by Step Solution
- Step 1: Write the proportion equation
207.43 : 286.40 = 133.79 : x - Step 2: Convert to fraction form
207.43/286.40 = 133.79/x - Step 3: Cross multiply
207.43x = 286.40 × 133.79 - Step 4: Simplify right side
207.43x = 38,316.36 - Step 5: Solve for x
x = 38,316.36/207.43 - Step 6: Final answer
x = 184.72
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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.