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Finding the Fourth Proportional to 641.10, 885.01 and 375.50

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Solution

The fourth proportional to 641.10, 885.01 and 375.50 is: 518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.10 : 885.01 = 375.50 : x
  2. Step 2: Convert to fraction form
    641.10/885.01 = 375.50/x
  3. Step 3: Cross multiply
    641.10x = 885.01 × 375.50
  4. Step 4: Simplify right side
    641.10x = 332,324.77
  5. Step 5: Solve for x
    x = 332,324.77/641.10
  6. Step 6: Final answer
    x = 518.37

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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.