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Finding the Fourth Proportional to 641.16, 967.52 and 618.28

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Solution

The fourth proportional to 641.16, 967.52 and 618.28 is: 932.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.16 : 967.52 = 618.28 : x
  2. Step 2: Convert to fraction form
    641.16/967.52 = 618.28/x
  3. Step 3: Cross multiply
    641.16x = 967.52 × 618.28
  4. Step 4: Simplify right side
    641.16x = 598,198.27
  5. Step 5: Solve for x
    x = 598,198.27/641.16
  6. Step 6: Final answer
    x = 932.99

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.