Finding the Fourth Proportional to 133.32, 199.08 and 115.08
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Solution
The fourth proportional to 133.32, 199.08 and 115.08 is: 171.84
Step by Step Solution
- Step 1: Write the proportion equation
133.32 : 199.08 = 115.08 : x - Step 2: Convert to fraction form
133.32/199.08 = 115.08/x - Step 3: Cross multiply
133.32x = 199.08 × 115.08 - Step 4: Simplify right side
133.32x = 22,910.13 - Step 5: Solve for x
x = 22,910.13/133.32 - Step 6: Final answer
x = 171.84
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.