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Finding the Fourth Proportional to 633.28, 873.91 and 353.53

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Solution

The fourth proportional to 633.28, 873.91 and 353.53 is: 487.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.28 : 873.91 = 353.53 : x
  2. Step 2: Convert to fraction form
    633.28/873.91 = 353.53/x
  3. Step 3: Cross multiply
    633.28x = 873.91 × 353.53
  4. Step 4: Simplify right side
    633.28x = 308,953.40
  5. Step 5: Solve for x
    x = 308,953.40/633.28
  6. Step 6: Final answer
    x = 487.86

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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.