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Finding the Fourth Proportional to 633.21, 873.83 and 353.46

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Solution

The fourth proportional to 633.21, 873.83 and 353.46 is: 487.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.21 : 873.83 = 353.46 : x
  2. Step 2: Convert to fraction form
    633.21/873.83 = 353.46/x
  3. Step 3: Cross multiply
    633.21x = 873.83 × 353.46
  4. Step 4: Simplify right side
    633.21x = 308,863.95
  5. Step 5: Solve for x
    x = 308,863.95/633.21
  6. Step 6: Final answer
    x = 487.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.