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Finding the Fourth Proportional to 655.14, 982.18 and 308.30

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Solution

The fourth proportional to 655.14, 982.18 and 308.30 is: 462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.14 : 982.18 = 308.30 : x
  2. Step 2: Convert to fraction form
    655.14/982.18 = 308.30/x
  3. Step 3: Cross multiply
    655.14x = 982.18 × 308.30
  4. Step 4: Simplify right side
    655.14x = 302,806.09
  5. Step 5: Solve for x
    x = 302,806.09/655.14
  6. Step 6: Final answer
    x = 462.20

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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.