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Finding the Fourth Proportional to 293.60, 405.21 and 169.26

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Solution

The fourth proportional to 293.60, 405.21 and 169.26 is: 233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.60 : 405.21 = 169.26 : x
  2. Step 2: Convert to fraction form
    293.60/405.21 = 169.26/x
  3. Step 3: Cross multiply
    293.60x = 405.21 × 169.26
  4. Step 4: Simplify right side
    293.60x = 68,585.84
  5. Step 5: Solve for x
    x = 68,585.84/293.60
  6. Step 6: Final answer
    x = 233.60

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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.