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Finding the Fourth Proportional to 656.34, 984.51 and 169.43

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Solution

The fourth proportional to 656.34, 984.51 and 169.43 is: 254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.34 : 984.51 = 169.43 : x
  2. Step 2: Convert to fraction form
    656.34/984.51 = 169.43/x
  3. Step 3: Cross multiply
    656.34x = 984.51 × 169.43
  4. Step 4: Simplify right side
    656.34x = 166,805.53
  5. Step 5: Solve for x
    x = 166,805.53/656.34
  6. Step 6: Final answer
    x = 254.15

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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.