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Finding the Fourth Proportional to 265.42, 395.01 and 255.70

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Solution

The fourth proportional to 265.42, 395.01 and 255.70 is: 380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.42 : 395.01 = 255.70 : x
  2. Step 2: Convert to fraction form
    265.42/395.01 = 255.70/x
  3. Step 3: Cross multiply
    265.42x = 395.01 × 255.70
  4. Step 4: Simplify right side
    265.42x = 101,004.06
  5. Step 5: Solve for x
    x = 101,004.06/265.42
  6. Step 6: Final answer
    x = 380.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.