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Finding the Fourth Proportional to 294.49, 406.40 and 163.50

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Solution

The fourth proportional to 294.49, 406.40 and 163.50 is: 225.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.49 : 406.40 = 163.50 : x
  2. Step 2: Convert to fraction form
    294.49/406.40 = 163.50/x
  3. Step 3: Cross multiply
    294.49x = 406.40 × 163.50
  4. Step 4: Simplify right side
    294.49x = 66,446.40
  5. Step 5: Solve for x
    x = 66,446.40/294.49
  6. Step 6: Final answer
    x = 225.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.