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Finding the Fourth Proportional to 552.12, 757.26 and 486.52

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Solution

The fourth proportional to 552.12, 757.26 and 486.52 is: 667.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.12 : 757.26 = 486.52 : x
  2. Step 2: Convert to fraction form
    552.12/757.26 = 486.52/x
  3. Step 3: Cross multiply
    552.12x = 757.26 × 486.52
  4. Step 4: Simplify right side
    552.12x = 368,422.14
  5. Step 5: Solve for x
    x = 368,422.14/552.12
  6. Step 6: Final answer
    x = 667.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.