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Finding the Fourth Proportional to 641.20, 962.08 and 367.52

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Solution

The fourth proportional to 641.20, 962.08 and 367.52 is: 551.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.20 : 962.08 = 367.52 : x
  2. Step 2: Convert to fraction form
    641.20/962.08 = 367.52/x
  3. Step 3: Cross multiply
    641.20x = 962.08 × 367.52
  4. Step 4: Simplify right side
    641.20x = 353,583.64
  5. Step 5: Solve for x
    x = 353,583.64/641.20
  6. Step 6: Final answer
    x = 551.44

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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.