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Finding the Fourth Proportional to 185.67, 256.10 and 130.37

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Solution

The fourth proportional to 185.67, 256.10 and 130.37 is: 179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.67 : 256.10 = 130.37 : x
  2. Step 2: Convert to fraction form
    185.67/256.10 = 130.37/x
  3. Step 3: Cross multiply
    185.67x = 256.10 × 130.37
  4. Step 4: Simplify right side
    185.67x = 33,385.82
  5. Step 5: Solve for x
    x = 33,385.82/185.67
  6. Step 6: Final answer
    x = 179.81

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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.