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Finding the Fourth Proportional to 656.68, 985.02 and 169.73

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Solution

The fourth proportional to 656.68, 985.02 and 169.73 is: 254.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.68 : 985.02 = 169.73 : x
  2. Step 2: Convert to fraction form
    656.68/985.02 = 169.73/x
  3. Step 3: Cross multiply
    656.68x = 985.02 × 169.73
  4. Step 4: Simplify right side
    656.68x = 167,181.67
  5. Step 5: Solve for x
    x = 167,181.67/656.68
  6. Step 6: Final answer
    x = 254.59

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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.