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Finding the Fourth Proportional to 293.93, 405.81 and 189.07

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Solution

The fourth proportional to 293.93, 405.81 and 189.07 is: 261.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.93 : 405.81 = 189.07 : x
  2. Step 2: Convert to fraction form
    293.93/405.81 = 189.07/x
  3. Step 3: Cross multiply
    293.93x = 405.81 × 189.07
  4. Step 4: Simplify right side
    293.93x = 76,725.48
  5. Step 5: Solve for x
    x = 76,725.48/293.93
  6. Step 6: Final answer
    x = 261.03

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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.