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Finding the Fourth Proportional to 552.10, 761.90 and 303.44

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Solution

The fourth proportional to 552.10, 761.90 and 303.44 is: 418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.10 : 761.90 = 303.44 : x
  2. Step 2: Convert to fraction form
    552.10/761.90 = 303.44/x
  3. Step 3: Cross multiply
    552.10x = 761.90 × 303.44
  4. Step 4: Simplify right side
    552.10x = 231,190.94
  5. Step 5: Solve for x
    x = 231,190.94/552.10
  6. Step 6: Final answer
    x = 418.75

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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.