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Finding the Fourth Proportional to 262.55, 393.27 and 125.70

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Solution

The fourth proportional to 262.55, 393.27 and 125.70 is: 188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.55 : 393.27 = 125.70 : x
  2. Step 2: Convert to fraction form
    262.55/393.27 = 125.70/x
  3. Step 3: Cross multiply
    262.55x = 393.27 × 125.70
  4. Step 4: Simplify right side
    262.55x = 49,434.04
  5. Step 5: Solve for x
    x = 49,434.04/262.55
  6. Step 6: Final answer
    x = 188.29

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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.