Finding the Fourth Proportional to 135.26, 202.90 and 70.28
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Solution
The fourth proportional to 135.26, 202.90 and 70.28 is: 105.43
Step by Step Solution
- Step 1: Write the proportion equation
135.26 : 202.90 = 70.28 : x - Step 2: Convert to fraction form
135.26/202.90 = 70.28/x - Step 3: Cross multiply
135.26x = 202.90 × 70.28 - Step 4: Simplify right side
135.26x = 14,259.81 - Step 5: Solve for x
x = 14,259.81/135.26 - Step 6: Final answer
x = 105.43
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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.