Finding the Fourth Proportional to 133.10, 183.68 and 77.08
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Solution
The fourth proportional to 133.10, 183.68 and 77.08 is: 106.36
Step by Step Solution
- Step 1: Write the proportion equation
133.10 : 183.68 = 77.08 : x - Step 2: Convert to fraction form
133.10/183.68 = 77.08/x - Step 3: Cross multiply
133.10x = 183.68 × 77.08 - Step 4: Simplify right side
133.10x = 14,156.75 - Step 5: Solve for x
x = 14,156.75/133.10 - Step 6: Final answer
x = 106.36
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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.