Finding the Fourth Proportional to 688, 1,031.99 and 201.06
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Solution
The fourth proportional to 688, 1,031.99 and 201.06 is: 301.59
Step by Step Solution
- Step 1: Write the proportion equation
688 : 1,031.99 = 201.06 : x - Step 2: Convert to fraction form
688/1,031.99 = 201.06/x - Step 3: Cross multiply
688x = 1,031.99 × 201.06 - Step 4: Simplify right side
688x = 207,491.91 - Step 5: Solve for x
x = 207,491.91/688 - Step 6: Final answer
x = 301.59
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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.