Finding the Fourth Proportional to 83.74, 115.58 and 62.99
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Solution
The fourth proportional to 83.74, 115.58 and 62.99 is: 86.93
Step by Step Solution
- Step 1: Write the proportion equation
83.74 : 115.58 = 62.99 : x - Step 2: Convert to fraction form
83.74/115.58 = 62.99/x - Step 3: Cross multiply
83.74x = 115.58 × 62.99 - Step 4: Simplify right side
83.74x = 7,279.49 - Step 5: Solve for x
x = 7,279.49/83.74 - Step 6: Final answer
x = 86.93
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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.