Finding the Fourth Proportional to 133.18, 183.78 and 74.97
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Solution
The fourth proportional to 133.18, 183.78 and 74.97 is: 103.46
Step by Step Solution
- Step 1: Write the proportion equation
133.18 : 183.78 = 74.97 : x - Step 2: Convert to fraction form
133.18/183.78 = 74.97/x - Step 3: Cross multiply
133.18x = 183.78 × 74.97 - Step 4: Simplify right side
133.18x = 13,777.99 - Step 5: Solve for x
x = 13,777.99/133.18 - Step 6: Final answer
x = 103.46
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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.