Finding the Fourth Proportional to 288.04, 431.95 and 92.99
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Solution
The fourth proportional to 288.04, 431.95 and 92.99 is: 139.45
Step by Step Solution
- Step 1: Write the proportion equation
288.04 : 431.95 = 92.99 : x - Step 2: Convert to fraction form
288.04/431.95 = 92.99/x - Step 3: Cross multiply
288.04x = 431.95 × 92.99 - Step 4: Simplify right side
288.04x = 40,167.03 - Step 5: Solve for x
x = 40,167.03/288.04 - Step 6: Final answer
x = 139.45
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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.