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Finding the Fourth Proportional to 344.99, 475.90 and 239.90

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Solution

The fourth proportional to 344.99, 475.90 and 239.90 is: 330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.99 : 475.90 = 239.90 : x
  2. Step 2: Convert to fraction form
    344.99/475.90 = 239.90/x
  3. Step 3: Cross multiply
    344.99x = 475.90 × 239.90
  4. Step 4: Simplify right side
    344.99x = 114,165.43
  5. Step 5: Solve for x
    x = 114,165.43/344.99
  6. Step 6: Final answer
    x = 330.92

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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.