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Finding the Fourth Proportional to 352.80, 487.02 and 259.56

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Solution

The fourth proportional to 352.80, 487.02 and 259.56 is: 358.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.80 : 487.02 = 259.56 : x
  2. Step 2: Convert to fraction form
    352.80/487.02 = 259.56/x
  3. Step 3: Cross multiply
    352.80x = 487.02 × 259.56
  4. Step 4: Simplify right side
    352.80x = 126,410.91
  5. Step 5: Solve for x
    x = 126,410.91/352.80
  6. Step 6: Final answer
    x = 358.31

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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.