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Finding the Fourth Proportional to 655.41, 982.42 and 308.45

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Solution

The fourth proportional to 655.41, 982.42 and 308.45 is: 462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.41 : 982.42 = 308.45 : x
  2. Step 2: Convert to fraction form
    655.41/982.42 = 308.45/x
  3. Step 3: Cross multiply
    655.41x = 982.42 × 308.45
  4. Step 4: Simplify right side
    655.41x = 303,027.45
  5. Step 5: Solve for x
    x = 303,027.45/655.41
  6. Step 6: Final answer
    x = 462.35

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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.