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Finding the Fourth Proportional to 293.49, 440.36 and 156.38

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Solution

The fourth proportional to 293.49, 440.36 and 156.38 is: 234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.49 : 440.36 = 156.38 : x
  2. Step 2: Convert to fraction form
    293.49/440.36 = 156.38/x
  3. Step 3: Cross multiply
    293.49x = 440.36 × 156.38
  4. Step 4: Simplify right side
    293.49x = 68,861.30
  5. Step 5: Solve for x
    x = 68,861.30/293.49
  6. Step 6: Final answer
    x = 234.63

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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.