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Finding the Fourth Proportional to 294.30, 406.13 and 161.53

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Solution

The fourth proportional to 294.30, 406.13 and 161.53 is: 222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.30 : 406.13 = 161.53 : x
  2. Step 2: Convert to fraction form
    294.30/406.13 = 161.53/x
  3. Step 3: Cross multiply
    294.30x = 406.13 × 161.53
  4. Step 4: Simplify right side
    294.30x = 65,601.57
  5. Step 5: Solve for x
    x = 65,601.57/294.30
  6. Step 6: Final answer
    x = 222.91

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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.