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Finding the Fourth Proportional to 634.70, 876.52 and 633.49

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Solution

The fourth proportional to 634.70, 876.52 and 633.49 is: 874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.70 : 876.52 = 633.49 : x
  2. Step 2: Convert to fraction form
    634.70/876.52 = 633.49/x
  3. Step 3: Cross multiply
    634.70x = 876.52 × 633.49
  4. Step 4: Simplify right side
    634.70x = 555,265.26
  5. Step 5: Solve for x
    x = 555,265.26/634.70
  6. Step 6: Final answer
    x = 874.84

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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.