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Finding the Fourth Proportional to 351.32, 485.15 and 301.23

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Solution

The fourth proportional to 351.32, 485.15 and 301.23 is: 415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.32 : 485.15 = 301.23 : x
  2. Step 2: Convert to fraction form
    351.32/485.15 = 301.23/x
  3. Step 3: Cross multiply
    351.32x = 485.15 × 301.23
  4. Step 4: Simplify right side
    351.32x = 146,140.23
  5. Step 5: Solve for x
    x = 146,140.23/351.32
  6. Step 6: Final answer
    x = 415.98

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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.