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Finding the Fourth Proportional to 655.75, 983.46 and 308.75

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Solution

The fourth proportional to 655.75, 983.46 and 308.75 is: 463.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.75 : 983.46 = 308.75 : x
  2. Step 2: Convert to fraction form
    655.75/983.46 = 308.75/x
  3. Step 3: Cross multiply
    655.75x = 983.46 × 308.75
  4. Step 4: Simplify right side
    655.75x = 303,637.78
  5. Step 5: Solve for x
    x = 303,637.78/655.75
  6. Step 6: Final answer
    x = 463.04

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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.