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Finding the Fourth Proportional to 641.48, 884.60 and 606.79

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Solution

The fourth proportional to 641.48, 884.60 and 606.79 is: 836.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.48 : 884.60 = 606.79 : x
  2. Step 2: Convert to fraction form
    641.48/884.60 = 606.79/x
  3. Step 3: Cross multiply
    641.48x = 884.60 × 606.79
  4. Step 4: Simplify right side
    641.48x = 536,766.43
  5. Step 5: Solve for x
    x = 536,766.43/641.48
  6. Step 6: Final answer
    x = 836.76

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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.