Finding the Fourth Proportional to 84.95, 117.14 and 55.83
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Solution
The fourth proportional to 84.95, 117.14 and 55.83 is: 76.99
Step by Step Solution
- Step 1: Write the proportion equation
84.95 : 117.14 = 55.83 : x - Step 2: Convert to fraction form
84.95/117.14 = 55.83/x - Step 3: Cross multiply
84.95x = 117.14 × 55.83 - Step 4: Simplify right side
84.95x = 6,539.65 - Step 5: Solve for x
x = 6,539.65/84.95 - Step 6: Final answer
x = 76.99
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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.