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Finding the Fourth Proportional to 233.78, 350.60 and 105.50

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Solution

The fourth proportional to 233.78, 350.60 and 105.50 is: 158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.78 : 350.60 = 105.50 : x
  2. Step 2: Convert to fraction form
    233.78/350.60 = 105.50/x
  3. Step 3: Cross multiply
    233.78x = 350.60 × 105.50
  4. Step 4: Simplify right side
    233.78x = 36,988.30
  5. Step 5: Solve for x
    x = 36,988.30/233.78
  6. Step 6: Final answer
    x = 158.22

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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.