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Finding the Fourth Proportional to 185.59, 256.06 and 136.55

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Solution

The fourth proportional to 185.59, 256.06 and 136.55 is: 188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.59 : 256.06 = 136.55 : x
  2. Step 2: Convert to fraction form
    185.59/256.06 = 136.55/x
  3. Step 3: Cross multiply
    185.59x = 256.06 × 136.55
  4. Step 4: Simplify right side
    185.59x = 34,965.80
  5. Step 5: Solve for x
    x = 34,965.80/185.59
  6. Step 6: Final answer
    x = 188.40

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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.