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Finding the Fourth Proportional to 352.56, 529.38 and 317.28

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Solution

The fourth proportional to 352.56, 529.38 and 317.28 is: 476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.56 : 529.38 = 317.28 : x
  2. Step 2: Convert to fraction form
    352.56/529.38 = 317.28/x
  3. Step 3: Cross multiply
    352.56x = 529.38 × 317.28
  4. Step 4: Simplify right side
    352.56x = 167,961.69
  5. Step 5: Solve for x
    x = 167,961.69/352.56
  6. Step 6: Final answer
    x = 476.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.