Finding the Fourth Proportional to 99.31, 148.74 and 64.99
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Solution
The fourth proportional to 99.31, 148.74 and 64.99 is: 97.33
Step by Step Solution
- Step 1: Write the proportion equation
99.31 : 148.74 = 64.99 : x - Step 2: Convert to fraction form
99.31/148.74 = 64.99/x - Step 3: Cross multiply
99.31x = 148.74 × 64.99 - Step 4: Simplify right side
99.31x = 9,666.40 - Step 5: Solve for x
x = 9,666.40/99.31 - Step 6: Final answer
x = 97.33
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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.