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Finding the Fourth Proportional to 293.75, 405.39 and 162.76

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Solution

The fourth proportional to 293.75, 405.39 and 162.76 is: 224.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.75 : 405.39 = 162.76 : x
  2. Step 2: Convert to fraction form
    293.75/405.39 = 162.76/x
  3. Step 3: Cross multiply
    293.75x = 405.39 × 162.76
  4. Step 4: Simplify right side
    293.75x = 65,980.26
  5. Step 5: Solve for x
    x = 65,980.26/293.75
  6. Step 6: Final answer
    x = 224.61

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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.