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Finding the Fourth Proportional to 233.45, 350.18 and 105.20

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Solution

The fourth proportional to 233.45, 350.18 and 105.20 is: 157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.45 : 350.18 = 105.20 : x
  2. Step 2: Convert to fraction form
    233.45/350.18 = 105.20/x
  3. Step 3: Cross multiply
    233.45x = 350.18 × 105.20
  4. Step 4: Simplify right side
    233.45x = 36,838.94
  5. Step 5: Solve for x
    x = 36,838.94/233.45
  6. Step 6: Final answer
    x = 157.80

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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.