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Finding the Fourth Proportional to 254.70, 351.72 and 185.16

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Solution

The fourth proportional to 254.70, 351.72 and 185.16 is: 255.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.70 : 351.72 = 185.16 : x
  2. Step 2: Convert to fraction form
    254.70/351.72 = 185.16/x
  3. Step 3: Cross multiply
    254.70x = 351.72 × 185.16
  4. Step 4: Simplify right side
    254.70x = 65,124.48
  5. Step 5: Solve for x
    x = 65,124.48/254.70
  6. Step 6: Final answer
    x = 255.69

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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.