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Finding the Fourth Proportional to 293.61, 439.11 and 261.32

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Solution

The fourth proportional to 293.61, 439.11 and 261.32 is: 390.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.61 : 439.11 = 261.32 : x
  2. Step 2: Convert to fraction form
    293.61/439.11 = 261.32/x
  3. Step 3: Cross multiply
    293.61x = 439.11 × 261.32
  4. Step 4: Simplify right side
    293.61x = 114,746.03
  5. Step 5: Solve for x
    x = 114,746.03/293.61
  6. Step 6: Final answer
    x = 390.81

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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.