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Finding the Fourth Proportional to 349.26, 485.32 and 345.46

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Solution

The fourth proportional to 349.26, 485.32 and 345.46 is: 480.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.26 : 485.32 = 345.46 : x
  2. Step 2: Convert to fraction form
    349.26/485.32 = 345.46/x
  3. Step 3: Cross multiply
    349.26x = 485.32 × 345.46
  4. Step 4: Simplify right side
    349.26x = 167,656.92
  5. Step 5: Solve for x
    x = 167,656.92/349.26
  6. Step 6: Final answer
    x = 480.04

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.