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Finding the Fourth Proportional to 641.35, 884.07 and 536.79

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Solution

The fourth proportional to 641.35, 884.07 and 536.79 is: 739.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.35 : 884.07 = 536.79 : x
  2. Step 2: Convert to fraction form
    641.35/884.07 = 536.79/x
  3. Step 3: Cross multiply
    641.35x = 884.07 × 536.79
  4. Step 4: Simplify right side
    641.35x = 474,559.94
  5. Step 5: Solve for x
    x = 474,559.94/641.35
  6. Step 6: Final answer
    x = 739.94

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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.