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Finding the Fourth Proportional to 375.85, 563.55 and 193.60

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Solution

The fourth proportional to 375.85, 563.55 and 193.60 is: 290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.85 : 563.55 = 193.60 : x
  2. Step 2: Convert to fraction form
    375.85/563.55 = 193.60/x
  3. Step 3: Cross multiply
    375.85x = 563.55 × 193.60
  4. Step 4: Simplify right side
    375.85x = 109,103.28
  5. Step 5: Solve for x
    x = 109,103.28/375.85
  6. Step 6: Final answer
    x = 290.28

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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.