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Finding the Fourth Proportional to 377.20, 564.36 and 249.20

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Solution

The fourth proportional to 377.20, 564.36 and 249.20 is: 372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.20 : 564.36 = 249.20 : x
  2. Step 2: Convert to fraction form
    377.20/564.36 = 249.20/x
  3. Step 3: Cross multiply
    377.20x = 564.36 × 249.20
  4. Step 4: Simplify right side
    377.20x = 140,638.51
  5. Step 5: Solve for x
    x = 140,638.51/377.20
  6. Step 6: Final answer
    x = 372.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.