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Finding the Fourth Proportional to 633.75, 874.51 and 353.96

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Solution

The fourth proportional to 633.75, 874.51 and 353.96 is: 488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.75 : 874.51 = 353.96 : x
  2. Step 2: Convert to fraction form
    633.75/874.51 = 353.96/x
  3. Step 3: Cross multiply
    633.75x = 874.51 × 353.96
  4. Step 4: Simplify right side
    633.75x = 309,541.56
  5. Step 5: Solve for x
    x = 309,541.56/633.75
  6. Step 6: Final answer
    x = 488.43

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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.