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Finding the Fourth Proportional to 641.89, 962.55 and 231.04

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Solution

The fourth proportional to 641.89, 962.55 and 231.04 is: 346.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.89 : 962.55 = 231.04 : x
  2. Step 2: Convert to fraction form
    641.89/962.55 = 231.04/x
  3. Step 3: Cross multiply
    641.89x = 962.55 × 231.04
  4. Step 4: Simplify right side
    641.89x = 222,387.55
  5. Step 5: Solve for x
    x = 222,387.55/641.89
  6. Step 6: Final answer
    x = 346.46

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.