Finding the Fourth Proportional to 135.41, 202.97 and 66.98
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Solution
The fourth proportional to 135.41, 202.97 and 66.98 is: 100.40
Step by Step Solution
- Step 1: Write the proportion equation
135.41 : 202.97 = 66.98 : x - Step 2: Convert to fraction form
135.41/202.97 = 66.98/x - Step 3: Cross multiply
135.41x = 202.97 × 66.98 - Step 4: Simplify right side
135.41x = 13,595.23 - Step 5: Solve for x
x = 13,595.23/135.41 - Step 6: Final answer
x = 100.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.