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Finding the Fourth Proportional to 968.00, 1,449.86 and 660.42

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Solution

The fourth proportional to 968.00, 1,449.86 and 660.42 is: 989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.00 : 1,449.86 = 660.42 : x
  2. Step 2: Convert to fraction form
    968.00/1,449.86 = 660.42/x
  3. Step 3: Cross multiply
    968.00x = 1,449.86 × 660.42
  4. Step 4: Simplify right side
    968.00x = 957,513.24
  5. Step 5: Solve for x
    x = 957,513.24/968.00
  6. Step 6: Final answer
    x = 989.17

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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.