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Finding the Fourth Proportional to 233.75, 320.85 and 223.73

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Solution

The fourth proportional to 233.75, 320.85 and 223.73 is: 307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.75 : 320.85 = 223.73 : x
  2. Step 2: Convert to fraction form
    233.75/320.85 = 223.73/x
  3. Step 3: Cross multiply
    233.75x = 320.85 × 223.73
  4. Step 4: Simplify right side
    233.75x = 71,785.15
  5. Step 5: Solve for x
    x = 71,785.15/233.75
  6. Step 6: Final answer
    x = 307.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.