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Finding the Fourth Proportional to 293.52, 404.78 and 188.69

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Solution

The fourth proportional to 293.52, 404.78 and 188.69 is: 260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.52 : 404.78 = 188.69 : x
  2. Step 2: Convert to fraction form
    293.52/404.78 = 188.69/x
  3. Step 3: Cross multiply
    293.52x = 404.78 × 188.69
  4. Step 4: Simplify right side
    293.52x = 76,374.97
  5. Step 5: Solve for x
    x = 76,374.97/293.52
  6. Step 6: Final answer
    x = 260.20

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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.