Finding the Fourth Proportional to 157.17, 235.82 and 84.95
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Solution
The fourth proportional to 157.17, 235.82 and 84.95 is: 127.45
Step by Step Solution
- Step 1: Write the proportion equation
157.17 : 235.82 = 84.95 : x - Step 2: Convert to fraction form
157.17/235.82 = 84.95/x - Step 3: Cross multiply
157.17x = 235.82 × 84.95 - Step 4: Simplify right side
157.17x = 20,031.94 - Step 5: Solve for x
x = 20,031.94/157.17 - Step 6: Final answer
x = 127.45
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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.