Finding the Fourth Proportional to 79.36, 109.37 and 58.59
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Solution
The fourth proportional to 79.36, 109.37 and 58.59 is: 80.75
Step by Step Solution
- Step 1: Write the proportion equation
79.36 : 109.37 = 58.59 : x - Step 2: Convert to fraction form
79.36/109.37 = 58.59/x - Step 3: Cross multiply
79.36x = 109.37 × 58.59 - Step 4: Simplify right side
79.36x = 6,408.13 - Step 5: Solve for x
x = 6,408.13/79.36 - Step 6: Final answer
x = 80.75
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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.