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Finding the Fourth Proportional to 660.74, 991.24 and 227.84

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Solution

The fourth proportional to 660.74, 991.24 and 227.84 is: 341.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.74 : 991.24 = 227.84 : x
  2. Step 2: Convert to fraction form
    660.74/991.24 = 227.84/x
  3. Step 3: Cross multiply
    660.74x = 991.24 × 227.84
  4. Step 4: Simplify right side
    660.74x = 225,838.60
  5. Step 5: Solve for x
    x = 225,838.60/660.74
  6. Step 6: Final answer
    x = 341.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.