Finding the Fourth Proportional to 207.21, 286.14 and 133.65
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Solution
The fourth proportional to 207.21, 286.14 and 133.65 is: 184.56
Step by Step Solution
- Step 1: Write the proportion equation
207.21 : 286.14 = 133.65 : x - Step 2: Convert to fraction form
207.21/286.14 = 133.65/x - Step 3: Cross multiply
207.21x = 286.14 × 133.65 - Step 4: Simplify right side
207.21x = 38,242.61 - Step 5: Solve for x
x = 38,242.61/207.21 - Step 6: Final answer
x = 184.56
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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.