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Finding the Fourth Proportional to 655.49, 983.21 and 168.57

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Solution

The fourth proportional to 655.49, 983.21 and 168.57 is: 252.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.49 : 983.21 = 168.57 : x
  2. Step 2: Convert to fraction form
    655.49/983.21 = 168.57/x
  3. Step 3: Cross multiply
    655.49x = 983.21 × 168.57
  4. Step 4: Simplify right side
    655.49x = 165,738.87
  5. Step 5: Solve for x
    x = 165,738.87/655.49
  6. Step 6: Final answer
    x = 252.85

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Double scale
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1.5x scale

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.