Finding the Fourth Proportional to 84.84, 117.08 and 49.87
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Solution
The fourth proportional to 84.84, 117.08 and 49.87 is: 68.82
Step by Step Solution
- Step 1: Write the proportion equation
84.84 : 117.08 = 49.87 : x - Step 2: Convert to fraction form
84.84/117.08 = 49.87/x - Step 3: Cross multiply
84.84x = 117.08 × 49.87 - Step 4: Simplify right side
84.84x = 5,838.53 - Step 5: Solve for x
x = 5,838.53/84.84 - Step 6: Final answer
x = 68.82
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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.