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Finding the Fourth Proportional to 240.45, 334.05 and 238.20

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Solution

The fourth proportional to 240.45, 334.05 and 238.20 is: 330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.45 : 334.05 = 238.20 : x
  2. Step 2: Convert to fraction form
    240.45/334.05 = 238.20/x
  3. Step 3: Cross multiply
    240.45x = 334.05 × 238.20
  4. Step 4: Simplify right side
    240.45x = 79,570.71
  5. Step 5: Solve for x
    x = 79,570.71/240.45
  6. Step 6: Final answer
    x = 330.92

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.