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Finding the Fourth Proportional to 185.46, 255.91 and 148.15

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Solution

The fourth proportional to 185.46, 255.91 and 148.15 is: 204.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.46 : 255.91 = 148.15 : x
  2. Step 2: Convert to fraction form
    185.46/255.91 = 148.15/x
  3. Step 3: Cross multiply
    185.46x = 255.91 × 148.15
  4. Step 4: Simplify right side
    185.46x = 37,913.07
  5. Step 5: Solve for x
    x = 37,913.07/185.46
  6. Step 6: Final answer
    x = 204.43

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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.