Finding the Fourth Proportional to 157.14, 216.68 and 133.91
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Solution
The fourth proportional to 157.14, 216.68 and 133.91 is: 184.64
Step by Step Solution
- Step 1: Write the proportion equation
157.14 : 216.68 = 133.91 : x - Step 2: Convert to fraction form
157.14/216.68 = 133.91/x - Step 3: Cross multiply
157.14x = 216.68 × 133.91 - Step 4: Simplify right side
157.14x = 29,013.87 - Step 5: Solve for x
x = 29,013.87/157.14 - Step 6: Final answer
x = 184.64
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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.