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Finding the Fourth Proportional to 641.19, 884.93 and 375.71

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Solution

The fourth proportional to 641.19, 884.93 and 375.71 is: 518.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.19 : 884.93 = 375.71 : x
  2. Step 2: Convert to fraction form
    641.19/884.93 = 375.71/x
  3. Step 3: Cross multiply
    641.19x = 884.93 × 375.71
  4. Step 4: Simplify right side
    641.19x = 332,470.75
  5. Step 5: Solve for x
    x = 332,470.75/641.19
  6. Step 6: Final answer
    x = 518.52

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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.