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Finding the Fourth Proportional to 375.21, 563.03 and 131.91

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Solution

The fourth proportional to 375.21, 563.03 and 131.91 is: 197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.21 : 563.03 = 131.91 : x
  2. Step 2: Convert to fraction form
    375.21/563.03 = 131.91/x
  3. Step 3: Cross multiply
    375.21x = 563.03 × 131.91
  4. Step 4: Simplify right side
    375.21x = 74,268.63
  5. Step 5: Solve for x
    x = 74,268.63/375.21
  6. Step 6: Final answer
    x = 197.94

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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.