Finding the Fourth Proportional to 256.59, 384.88 and 74.00
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Solution
The fourth proportional to 256.59, 384.88 and 74.00 is: 110.99
Step by Step Solution
- Step 1: Write the proportion equation
256.59 : 384.88 = 74.00 : x - Step 2: Convert to fraction form
256.59/384.88 = 74.00/x - Step 3: Cross multiply
256.59x = 384.88 × 74.00 - Step 4: Simplify right side
256.59x = 28,479.20 - Step 5: Solve for x
x = 28,479.20/256.59 - Step 6: Final answer
x = 110.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.