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Finding the Fourth Proportional to 240.30, 329.45 and 238.50

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Solution

The fourth proportional to 240.30, 329.45 and 238.50 is: 326.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.30 : 329.45 = 238.50 : x
  2. Step 2: Convert to fraction form
    240.30/329.45 = 238.50/x
  3. Step 3: Cross multiply
    240.30x = 329.45 × 238.50
  4. Step 4: Simplify right side
    240.30x = 78,572.63
  5. Step 5: Solve for x
    x = 78,572.63/240.30
  6. Step 6: Final answer
    x = 326.98

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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.