Finding the Fourth Proportional to 79.17, 109.44 and 60.99
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Solution
The fourth proportional to 79.17, 109.44 and 60.99 is: 84.31
Step by Step Solution
- Step 1: Write the proportion equation
79.17 : 109.44 = 60.99 : x - Step 2: Convert to fraction form
79.17/109.44 = 60.99/x - Step 3: Cross multiply
79.17x = 109.44 × 60.99 - Step 4: Simplify right side
79.17x = 6,674.75 - Step 5: Solve for x
x = 6,674.75/79.17 - Step 6: Final answer
x = 84.31
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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.