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Finding the Fourth Proportional to 256.01, 353.26 and 151.09

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Solution

The fourth proportional to 256.01, 353.26 and 151.09 is: 208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.01 : 353.26 = 151.09 : x
  2. Step 2: Convert to fraction form
    256.01/353.26 = 151.09/x
  3. Step 3: Cross multiply
    256.01x = 353.26 × 151.09
  4. Step 4: Simplify right side
    256.01x = 53,374.68
  5. Step 5: Solve for x
    x = 53,374.68/256.01
  6. Step 6: Final answer
    x = 208.49

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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.