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Finding the Fourth Proportional to 633.08, 873.60 and 353.28

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Solution

The fourth proportional to 633.08, 873.60 and 353.28 is: 487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.08 : 873.60 = 353.28 : x
  2. Step 2: Convert to fraction form
    633.08/873.60 = 353.28/x
  3. Step 3: Cross multiply
    633.08x = 873.60 × 353.28
  4. Step 4: Simplify right side
    633.08x = 308,625.41
  5. Step 5: Solve for x
    x = 308,625.41/633.08
  6. Step 6: Final answer
    x = 487.50

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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.