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Finding the Fourth Proportional to 345.25, 475.05 and 333.28

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Solution

The fourth proportional to 345.25, 475.05 and 333.28 is: 458.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.25 : 475.05 = 333.28 : x
  2. Step 2: Convert to fraction form
    345.25/475.05 = 333.28/x
  3. Step 3: Cross multiply
    345.25x = 475.05 × 333.28
  4. Step 4: Simplify right side
    345.25x = 158,324.66
  5. Step 5: Solve for x
    x = 158,324.66/345.25
  6. Step 6: Final answer
    x = 458.58

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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.