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Finding the Fourth Proportional to 233.58, 350.50 and 111.90

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Solution

The fourth proportional to 233.58, 350.50 and 111.90 is: 167.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.58 : 350.50 = 111.90 : x
  2. Step 2: Convert to fraction form
    233.58/350.50 = 111.90/x
  3. Step 3: Cross multiply
    233.58x = 350.50 × 111.90
  4. Step 4: Simplify right side
    233.58x = 39,220.95
  5. Step 5: Solve for x
    x = 39,220.95/233.58
  6. Step 6: Final answer
    x = 167.91

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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.