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Finding the Fourth Proportional to 344.28, 476.34 and 300.66

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Solution

The fourth proportional to 344.28, 476.34 and 300.66 is: 415.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.28 : 476.34 = 300.66 : x
  2. Step 2: Convert to fraction form
    344.28/476.34 = 300.66/x
  3. Step 3: Cross multiply
    344.28x = 476.34 × 300.66
  4. Step 4: Simplify right side
    344.28x = 143,216.38
  5. Step 5: Solve for x
    x = 143,216.38/344.28
  6. Step 6: Final answer
    x = 415.99

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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.