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Finding the Fourth Proportional to 636.05, 876.07 and 632.27

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Solution

The fourth proportional to 636.05, 876.07 and 632.27 is: 870.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.05 : 876.07 = 632.27 : x
  2. Step 2: Convert to fraction form
    636.05/876.07 = 632.27/x
  3. Step 3: Cross multiply
    636.05x = 876.07 × 632.27
  4. Step 4: Simplify right side
    636.05x = 553,912.78
  5. Step 5: Solve for x
    x = 553,912.78/636.05
  6. Step 6: Final answer
    x = 870.86

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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.