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Finding the Fourth Proportional to 293.63, 439.16 and 261.36

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Solution

The fourth proportional to 293.63, 439.16 and 261.36 is: 390.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.63 : 439.16 = 261.36 : x
  2. Step 2: Convert to fraction form
    293.63/439.16 = 261.36/x
  3. Step 3: Cross multiply
    293.63x = 439.16 × 261.36
  4. Step 4: Simplify right side
    293.63x = 114,777.55
  5. Step 5: Solve for x
    x = 114,777.55/293.63
  6. Step 6: Final answer
    x = 390.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.