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Finding the Fourth Proportional to 637.20, 955.05 and 363.55

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Solution

The fourth proportional to 637.20, 955.05 and 363.55 is: 544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.20 : 955.05 = 363.55 : x
  2. Step 2: Convert to fraction form
    637.20/955.05 = 363.55/x
  3. Step 3: Cross multiply
    637.20x = 955.05 × 363.55
  4. Step 4: Simplify right side
    637.20x = 347,208.43
  5. Step 5: Solve for x
    x = 347,208.43/637.20
  6. Step 6: Final answer
    x = 544.90

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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.