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Finding the Fourth Proportional to 240.73, 332.28 and 157.90

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Solution

The fourth proportional to 240.73, 332.28 and 157.90 is: 217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.73 : 332.28 = 157.90 : x
  2. Step 2: Convert to fraction form
    240.73/332.28 = 157.90/x
  3. Step 3: Cross multiply
    240.73x = 332.28 × 157.90
  4. Step 4: Simplify right side
    240.73x = 52,467.01
  5. Step 5: Solve for x
    x = 52,467.01/240.73
  6. Step 6: Final answer
    x = 217.95

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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.