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Finding the Fourth Proportional to 549.20, 757.82 and 328.25

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Solution

The fourth proportional to 549.20, 757.82 and 328.25 is: 452.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.20 : 757.82 = 328.25 : x
  2. Step 2: Convert to fraction form
    549.20/757.82 = 328.25/x
  3. Step 3: Cross multiply
    549.20x = 757.82 × 328.25
  4. Step 4: Simplify right side
    549.20x = 248,757.13
  5. Step 5: Solve for x
    x = 248,757.13/549.20
  6. Step 6: Final answer
    x = 452.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.