Finding the Fourth Proportional to 133.11, 183.67 and 74.88
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Solution
The fourth proportional to 133.11, 183.67 and 74.88 is: 103.32
Step by Step Solution
- Step 1: Write the proportion equation
133.11 : 183.67 = 74.88 : x - Step 2: Convert to fraction form
133.11/183.67 = 74.88/x - Step 3: Cross multiply
133.11x = 183.67 × 74.88 - Step 4: Simplify right side
133.11x = 13,753.21 - Step 5: Solve for x
x = 13,753.21/133.11 - Step 6: Final answer
x = 103.32
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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.