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Finding the Fourth Proportional to 256.08, 352.70 and 197.14

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Solution

The fourth proportional to 256.08, 352.70 and 197.14 is: 271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.08 : 352.70 = 197.14 : x
  2. Step 2: Convert to fraction form
    256.08/352.70 = 197.14/x
  3. Step 3: Cross multiply
    256.08x = 352.70 × 197.14
  4. Step 4: Simplify right side
    256.08x = 69,531.28
  5. Step 5: Solve for x
    x = 69,531.28/256.08
  6. Step 6: Final answer
    x = 271.52

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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.