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Finding the Fourth Proportional to 660.59, 991.03 and 295.48

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Solution

The fourth proportional to 660.59, 991.03 and 295.48 is: 443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.59 : 991.03 = 295.48 : x
  2. Step 2: Convert to fraction form
    660.59/991.03 = 295.48/x
  3. Step 3: Cross multiply
    660.59x = 991.03 × 295.48
  4. Step 4: Simplify right side
    660.59x = 292,824.59
  5. Step 5: Solve for x
    x = 292,824.59/660.59
  6. Step 6: Final answer
    x = 443.28

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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.