Finding the Fourth Proportional to 135.19, 202.67 and 70.99
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Solution
The fourth proportional to 135.19, 202.67 and 70.99 is: 106.42
Step by Step Solution
- Step 1: Write the proportion equation
135.19 : 202.67 = 70.99 : x - Step 2: Convert to fraction form
135.19/202.67 = 70.99/x - Step 3: Cross multiply
135.19x = 202.67 × 70.99 - Step 4: Simplify right side
135.19x = 14,387.19 - Step 5: Solve for x
x = 14,387.19/135.19 - Step 6: Final answer
x = 106.42
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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.