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Finding the Fourth Proportional to 230.88, 347.12 and 122.88

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Solution

The fourth proportional to 230.88, 347.12 and 122.88 is: 184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.88 : 347.12 = 122.88 : x
  2. Step 2: Convert to fraction form
    230.88/347.12 = 122.88/x
  3. Step 3: Cross multiply
    230.88x = 347.12 × 122.88
  4. Step 4: Simplify right side
    230.88x = 42,654.11
  5. Step 5: Solve for x
    x = 42,654.11/230.88
  6. Step 6: Final answer
    x = 184.75

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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.