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Finding the Fourth Proportional to 293.52, 405.19 and 280.46

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Solution

The fourth proportional to 293.52, 405.19 and 280.46 is: 387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.52 : 405.19 = 280.46 : x
  2. Step 2: Convert to fraction form
    293.52/405.19 = 280.46/x
  3. Step 3: Cross multiply
    293.52x = 405.19 × 280.46
  4. Step 4: Simplify right side
    293.52x = 113,636.16
  5. Step 5: Solve for x
    x = 113,636.16/293.52
  6. Step 6: Final answer
    x = 387.15

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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.