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Finding the Fourth Proportional to 185.95, 256.63 and 119.63

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Solution

The fourth proportional to 185.95, 256.63 and 119.63 is: 165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.95 : 256.63 = 119.63 : x
  2. Step 2: Convert to fraction form
    185.95/256.63 = 119.63/x
  3. Step 3: Cross multiply
    185.95x = 256.63 × 119.63
  4. Step 4: Simplify right side
    185.95x = 30,700.65
  5. Step 5: Solve for x
    x = 30,700.65/185.95
  6. Step 6: Final answer
    x = 165.10

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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.