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Finding the Fourth Proportional to 657.72, 985.68 and 224.46

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Solution

The fourth proportional to 657.72, 985.68 and 224.46 is: 336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.72 : 985.68 = 224.46 : x
  2. Step 2: Convert to fraction form
    657.72/985.68 = 224.46/x
  3. Step 3: Cross multiply
    657.72x = 985.68 × 224.46
  4. Step 4: Simplify right side
    657.72x = 221,245.73
  5. Step 5: Solve for x
    x = 221,245.73/657.72
  6. Step 6: Final answer
    x = 336.38

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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.