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Finding the Fourth Proportional to 185.30, 255.51 and 141.74

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Solution

The fourth proportional to 185.30, 255.51 and 141.74 is: 195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.30 : 255.51 = 141.74 : x
  2. Step 2: Convert to fraction form
    185.30/255.51 = 141.74/x
  3. Step 3: Cross multiply
    185.30x = 255.51 × 141.74
  4. Step 4: Simplify right side
    185.30x = 36,215.99
  5. Step 5: Solve for x
    x = 36,215.99/185.30
  6. Step 6: Final answer
    x = 195.45

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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.