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Finding the Fourth Proportional to 660.81, 991.56 and 295.52

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Solution

The fourth proportional to 660.81, 991.56 and 295.52 is: 443.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.81 : 991.56 = 295.52 : x
  2. Step 2: Convert to fraction form
    660.81/991.56 = 295.52/x
  3. Step 3: Cross multiply
    660.81x = 991.56 × 295.52
  4. Step 4: Simplify right side
    660.81x = 293,020.85
  5. Step 5: Solve for x
    x = 293,020.85/660.81
  6. Step 6: Final answer
    x = 443.43

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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.