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Finding the Fourth Proportional to 633.28, 873.94 and 371.42

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Solution

The fourth proportional to 633.28, 873.94 and 371.42 is: 512.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.28 : 873.94 = 371.42 : x
  2. Step 2: Convert to fraction form
    633.28/873.94 = 371.42/x
  3. Step 3: Cross multiply
    633.28x = 873.94 × 371.42
  4. Step 4: Simplify right side
    633.28x = 324,598.79
  5. Step 5: Solve for x
    x = 324,598.79/633.28
  6. Step 6: Final answer
    x = 512.57

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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.