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Finding the Fourth Proportional to 230.41, 317.87 and 143.03

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Solution

The fourth proportional to 230.41, 317.87 and 143.03 is: 197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.41 : 317.87 = 143.03 : x
  2. Step 2: Convert to fraction form
    230.41/317.87 = 143.03/x
  3. Step 3: Cross multiply
    230.41x = 317.87 × 143.03
  4. Step 4: Simplify right side
    230.41x = 45,464.95
  5. Step 5: Solve for x
    x = 45,464.95/230.41
  6. Step 6: Final answer
    x = 197.32

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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.