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Finding the Fourth Proportional to 375.68, 563.20 and 273.28

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Solution

The fourth proportional to 375.68, 563.20 and 273.28 is: 409.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.68 : 563.20 = 273.28 : x
  2. Step 2: Convert to fraction form
    375.68/563.20 = 273.28/x
  3. Step 3: Cross multiply
    375.68x = 563.20 × 273.28
  4. Step 4: Simplify right side
    375.68x = 153,911.30
  5. Step 5: Solve for x
    x = 153,911.30/375.68
  6. Step 6: Final answer
    x = 409.69

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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.