Finding the Fourth Proportional to 135.45, 202.91 and 87.26
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Solution
The fourth proportional to 135.45, 202.91 and 87.26 is: 130.71
Step by Step Solution
- Step 1: Write the proportion equation
135.45 : 202.91 = 87.26 : x - Step 2: Convert to fraction form
135.45/202.91 = 87.26/x - Step 3: Cross multiply
135.45x = 202.91 × 87.26 - Step 4: Simplify right side
135.45x = 17,704.48 - Step 5: Solve for x
x = 17,704.48/135.45 - Step 6: Final answer
x = 130.71
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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.