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Finding the Fourth Proportional to 238.31, 355.00 and 223.37

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Solution

The fourth proportional to 238.31, 355.00 and 223.37 is: 332.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.31 : 355.00 = 223.37 : x
  2. Step 2: Convert to fraction form
    238.31/355.00 = 223.37/x
  3. Step 3: Cross multiply
    238.31x = 355.00 × 223.37
  4. Step 4: Simplify right side
    238.31x = 79,294.02
  5. Step 5: Solve for x
    x = 79,294.02/238.31
  6. Step 6: Final answer
    x = 332.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.