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Finding the Fourth Proportional to 231.95, 348.38 and 223.75

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Solution

The fourth proportional to 231.95, 348.38 and 223.75 is: 336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.95 : 348.38 = 223.75 : x
  2. Step 2: Convert to fraction form
    231.95/348.38 = 223.75/x
  3. Step 3: Cross multiply
    231.95x = 348.38 × 223.75
  4. Step 4: Simplify right side
    231.95x = 77,950.03
  5. Step 5: Solve for x
    x = 77,950.03/231.95
  6. Step 6: Final answer
    x = 336.06

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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.