Finding the Fourth Proportional to 133.44, 184.08 and 86.74
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Solution
The fourth proportional to 133.44, 184.08 and 86.74 is: 119.66
Step by Step Solution
- Step 1: Write the proportion equation
133.44 : 184.08 = 86.74 : x - Step 2: Convert to fraction form
133.44/184.08 = 86.74/x - Step 3: Cross multiply
133.44x = 184.08 × 86.74 - Step 4: Simplify right side
133.44x = 15,967.10 - Step 5: Solve for x
x = 15,967.10/133.44 - Step 6: Final answer
x = 119.66
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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.