Finding the Fourth Proportional to 97.99, 134.95 and 84.17
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Solution
The fourth proportional to 97.99, 134.95 and 84.17 is: 115.91
Step by Step Solution
- Step 1: Write the proportion equation
97.99 : 134.95 = 84.17 : x - Step 2: Convert to fraction form
97.99/134.95 = 84.17/x - Step 3: Cross multiply
97.99x = 134.95 × 84.17 - Step 4: Simplify right side
97.99x = 11,357.65 - Step 5: Solve for x
x = 11,357.65/97.99 - Step 6: Final answer
x = 115.91
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.