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Finding the Fourth Proportional to 375.52, 563.28 and 253.90

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Solution

The fourth proportional to 375.52, 563.28 and 253.90 is: 380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.52 : 563.28 = 253.90 : x
  2. Step 2: Convert to fraction form
    375.52/563.28 = 253.90/x
  3. Step 3: Cross multiply
    375.52x = 563.28 × 253.90
  4. Step 4: Simplify right side
    375.52x = 143,016.79
  5. Step 5: Solve for x
    x = 143,016.79/375.52
  6. Step 6: Final answer
    x = 380.85

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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.