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Finding the Fourth Proportional to 641.24, 962 and 224.70

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Solution

The fourth proportional to 641.24, 962 and 224.70 is: 337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.24 : 962 = 224.70 : x
  2. Step 2: Convert to fraction form
    641.24/962 = 224.70/x
  3. Step 3: Cross multiply
    641.24x = 962 × 224.70
  4. Step 4: Simplify right side
    641.24x = 216,161.40
  5. Step 5: Solve for x
    x = 216,161.40/641.24
  6. Step 6: Final answer
    x = 337.10

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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.