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Finding the Fourth Proportional to 675.70, 926.96 and 633.79

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Solution

The fourth proportional to 675.70, 926.96 and 633.79 is: 869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.70 : 926.96 = 633.79 : x
  2. Step 2: Convert to fraction form
    675.70/926.96 = 633.79/x
  3. Step 3: Cross multiply
    675.70x = 926.96 × 633.79
  4. Step 4: Simplify right side
    675.70x = 587,497.98
  5. Step 5: Solve for x
    x = 587,497.98/675.70
  6. Step 6: Final answer
    x = 869.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.