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Finding the Fourth Proportional to 293.15, 439.08 and 171.11

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Solution

The fourth proportional to 293.15, 439.08 and 171.11 is: 256.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.15 : 439.08 = 171.11 : x
  2. Step 2: Convert to fraction form
    293.15/439.08 = 171.11/x
  3. Step 3: Cross multiply
    293.15x = 439.08 × 171.11
  4. Step 4: Simplify right side
    293.15x = 75,130.98
  5. Step 5: Solve for x
    x = 75,130.98/293.15
  6. Step 6: Final answer
    x = 256.29

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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.