Finding the Fourth Proportional to 98.99, 136.62 and 64.06
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Solution
The fourth proportional to 98.99, 136.62 and 64.06 is: 88.40
Step by Step Solution
- Step 1: Write the proportion equation
98.99 : 136.62 = 64.06 : x - Step 2: Convert to fraction form
98.99/136.62 = 64.06/x - Step 3: Cross multiply
98.99x = 136.62 × 64.06 - Step 4: Simplify right side
98.99x = 8,751.19 - Step 5: Solve for x
x = 8,751.19/98.99 - Step 6: Final answer
x = 88.40
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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.