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Finding the Fourth Proportional to 349.38, 481.10 and 312.52

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Solution

The fourth proportional to 349.38, 481.10 and 312.52 is: 430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.38 : 481.10 = 312.52 : x
  2. Step 2: Convert to fraction form
    349.38/481.10 = 312.52/x
  3. Step 3: Cross multiply
    349.38x = 481.10 × 312.52
  4. Step 4: Simplify right side
    349.38x = 150,353.37
  5. Step 5: Solve for x
    x = 150,353.37/349.38
  6. Step 6: Final answer
    x = 430.34

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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.