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Finding the Fourth Proportional to 633.11, 873.33 and 380.87

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Solution

The fourth proportional to 633.11, 873.33 and 380.87 is: 525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.11 : 873.33 = 380.87 : x
  2. Step 2: Convert to fraction form
    633.11/873.33 = 380.87/x
  3. Step 3: Cross multiply
    633.11x = 873.33 × 380.87
  4. Step 4: Simplify right side
    633.11x = 332,622.36
  5. Step 5: Solve for x
    x = 332,622.36/633.11
  6. Step 6: Final answer
    x = 525.38

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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.