Finding the Fourth Proportional to 145.99, 218.80 and 68.99
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Solution
The fourth proportional to 145.99, 218.80 and 68.99 is: 103.39
Step by Step Solution
- Step 1: Write the proportion equation
145.99 : 218.80 = 68.99 : x - Step 2: Convert to fraction form
145.99/218.80 = 68.99/x - Step 3: Cross multiply
145.99x = 218.80 × 68.99 - Step 4: Simplify right side
145.99x = 15,094.00 - Step 5: Solve for x
x = 15,094.00/145.99 - Step 6: Final answer
x = 103.39
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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.