Finding the Fourth Proportional to 135.63, 202.91 and 90.02
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Solution
The fourth proportional to 135.63, 202.91 and 90.02 is: 134.66
Step by Step Solution
- Step 1: Write the proportion equation
135.63 : 202.91 = 90.02 : x - Step 2: Convert to fraction form
135.63/202.91 = 90.02/x - Step 3: Cross multiply
135.63x = 202.91 × 90.02 - Step 4: Simplify right side
135.63x = 18,264.49 - Step 5: Solve for x
x = 18,264.49/135.63 - Step 6: Final answer
x = 134.66
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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.