Finding the Fourth Proportional to 79.44, 109.60 and 58.76
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Solution
The fourth proportional to 79.44, 109.60 and 58.76 is: 81.07
Step by Step Solution
- Step 1: Write the proportion equation
79.44 : 109.60 = 58.76 : x - Step 2: Convert to fraction form
79.44/109.60 = 58.76/x - Step 3: Cross multiply
79.44x = 109.60 × 58.76 - Step 4: Simplify right side
79.44x = 6,440.10 - Step 5: Solve for x
x = 6,440.10/79.44 - Step 6: Final answer
x = 81.07
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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.