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Finding the Fourth Proportional to 655.17, 982.20 and 449.23

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Solution

The fourth proportional to 655.17, 982.20 and 449.23 is: 673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.17 : 982.20 = 449.23 : x
  2. Step 2: Convert to fraction form
    655.17/982.20 = 449.23/x
  3. Step 3: Cross multiply
    655.17x = 982.20 × 449.23
  4. Step 4: Simplify right side
    655.17x = 441,233.71
  5. Step 5: Solve for x
    x = 441,233.71/655.17
  6. Step 6: Final answer
    x = 673.46

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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.