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Finding the Fourth Proportional to 256.09, 353.08 and 173.14

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Solution

The fourth proportional to 256.09, 353.08 and 173.14 is: 238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.09 : 353.08 = 173.14 : x
  2. Step 2: Convert to fraction form
    256.09/353.08 = 173.14/x
  3. Step 3: Cross multiply
    256.09x = 353.08 × 173.14
  4. Step 4: Simplify right side
    256.09x = 61,132.27
  5. Step 5: Solve for x
    x = 61,132.27/256.09
  6. Step 6: Final answer
    x = 238.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.