Finding the Fourth Proportional to 75.15, 112.55 and 58.95
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Solution
The fourth proportional to 75.15, 112.55 and 58.95 is: 88.28
Step by Step Solution
- Step 1: Write the proportion equation
75.15 : 112.55 = 58.95 : x - Step 2: Convert to fraction form
75.15/112.55 = 58.95/x - Step 3: Cross multiply
75.15x = 112.55 × 58.95 - Step 4: Simplify right side
75.15x = 6,634.53 - Step 5: Solve for x
x = 6,634.53/75.15 - Step 6: Final answer
x = 88.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.