Finding the Fourth Proportional to 59.99, 90.00 and 31.08
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Solution
The fourth proportional to 59.99, 90.00 and 31.08 is: 46.63
Step by Step Solution
- Step 1: Write the proportion equation
59.99 : 90.00 = 31.08 : x - Step 2: Convert to fraction form
59.99/90.00 = 31.08/x - Step 3: Cross multiply
59.99x = 90.00 × 31.08 - Step 4: Simplify right side
59.99x = 2,797.22 - Step 5: Solve for x
x = 2,797.22/59.99 - Step 6: Final answer
x = 46.63
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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.