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Finding the Fourth Proportional to 257.83, 355.66 and 169.36

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Solution

The fourth proportional to 257.83, 355.66 and 169.36 is: 233.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.83 : 355.66 = 169.36 : x
  2. Step 2: Convert to fraction form
    257.83/355.66 = 169.36/x
  3. Step 3: Cross multiply
    257.83x = 355.66 × 169.36
  4. Step 4: Simplify right side
    257.83x = 60,235.04
  5. Step 5: Solve for x
    x = 60,235.04/257.83
  6. Step 6: Final answer
    x = 233.62

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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.