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Finding the Fourth Proportional to 230.20, 317.31 and 180.99

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Solution

The fourth proportional to 230.20, 317.31 and 180.99 is: 249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.20 : 317.31 = 180.99 : x
  2. Step 2: Convert to fraction form
    230.20/317.31 = 180.99/x
  3. Step 3: Cross multiply
    230.20x = 317.31 × 180.99
  4. Step 4: Simplify right side
    230.20x = 57,429.94
  5. Step 5: Solve for x
    x = 57,429.94/230.20
  6. Step 6: Final answer
    x = 249.48

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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.