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Finding the Fourth Proportional to 240.37, 330.80 and 207.56

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Solution

The fourth proportional to 240.37, 330.80 and 207.56 is: 285.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.37 : 330.80 = 207.56 : x
  2. Step 2: Convert to fraction form
    240.37/330.80 = 207.56/x
  3. Step 3: Cross multiply
    240.37x = 330.80 × 207.56
  4. Step 4: Simplify right side
    240.37x = 68,660.64
  5. Step 5: Solve for x
    x = 68,660.64/240.37
  6. Step 6: Final answer
    x = 285.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.