Finding the Fourth Proportional to 115.06, 158.78 and 65.93
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Solution
The fourth proportional to 115.06, 158.78 and 65.93 is: 90.99
Step by Step Solution
- Step 1: Write the proportion equation
115.06 : 158.78 = 65.93 : x - Step 2: Convert to fraction form
115.06/158.78 = 65.93/x - Step 3: Cross multiply
115.06x = 158.78 × 65.93 - Step 4: Simplify right side
115.06x = 10,468.60 - Step 5: Solve for x
x = 10,468.60/115.06 - Step 6: Final answer
x = 90.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.