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Finding the Fourth Proportional to 633.09, 873.69 and 353.31

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Solution

The fourth proportional to 633.09, 873.69 and 353.31 is: 487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.09 : 873.69 = 353.31 : x
  2. Step 2: Convert to fraction form
    633.09/873.69 = 353.31/x
  3. Step 3: Cross multiply
    633.09x = 873.69 × 353.31
  4. Step 4: Simplify right side
    633.09x = 308,683.41
  5. Step 5: Solve for x
    x = 308,683.41/633.09
  6. Step 6: Final answer
    x = 487.58

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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.