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Finding the Fourth Proportional to 293.61, 440.40 and 171.63

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Solution

The fourth proportional to 293.61, 440.40 and 171.63 is: 257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.61 : 440.40 = 171.63 : x
  2. Step 2: Convert to fraction form
    293.61/440.40 = 171.63/x
  3. Step 3: Cross multiply
    293.61x = 440.40 × 171.63
  4. Step 4: Simplify right side
    293.61x = 75,585.85
  5. Step 5: Solve for x
    x = 75,585.85/293.61
  6. Step 6: Final answer
    x = 257.44

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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.