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Finding the Fourth Proportional to 230.61, 318.26 and 137.37

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Solution

The fourth proportional to 230.61, 318.26 and 137.37 is: 189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.61 : 318.26 = 137.37 : x
  2. Step 2: Convert to fraction form
    230.61/318.26 = 137.37/x
  3. Step 3: Cross multiply
    230.61x = 318.26 × 137.37
  4. Step 4: Simplify right side
    230.61x = 43,719.38
  5. Step 5: Solve for x
    x = 43,719.38/230.61
  6. Step 6: Final answer
    x = 189.58

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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.