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Finding the Fourth Proportional to 262, 393.19 and 125.16

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Solution

The fourth proportional to 262, 393.19 and 125.16 is: 187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    262 : 393.19 = 125.16 : x
  2. Step 2: Convert to fraction form
    262/393.19 = 125.16/x
  3. Step 3: Cross multiply
    262x = 393.19 × 125.16
  4. Step 4: Simplify right side
    262x = 49,211.66
  5. Step 5: Solve for x
    x = 49,211.66/262
  6. Step 6: Final answer
    x = 187.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.