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Finding the Fourth Proportional to 633.60, 874.34 and 371.62

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Solution

The fourth proportional to 633.60, 874.34 and 371.62 is: 512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.60 : 874.34 = 371.62 : x
  2. Step 2: Convert to fraction form
    633.60/874.34 = 371.62/x
  3. Step 3: Cross multiply
    633.60x = 874.34 × 371.62
  4. Step 4: Simplify right side
    633.60x = 324,922.23
  5. Step 5: Solve for x
    x = 324,922.23/633.60
  6. Step 6: Final answer
    x = 512.82

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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.