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Finding the Fourth Proportional to 245.34, 336.60 and 238.95

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Solution

The fourth proportional to 245.34, 336.60 and 238.95 is: 327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.34 : 336.60 = 238.95 : x
  2. Step 2: Convert to fraction form
    245.34/336.60 = 238.95/x
  3. Step 3: Cross multiply
    245.34x = 336.60 × 238.95
  4. Step 4: Simplify right side
    245.34x = 80,430.57
  5. Step 5: Solve for x
    x = 80,430.57/245.34
  6. Step 6: Final answer
    x = 327.83

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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.