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Finding the Fourth Proportional to 265.35, 395.74 and 239.43

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Solution

The fourth proportional to 265.35, 395.74 and 239.43 is: 357.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.35 : 395.74 = 239.43 : x
  2. Step 2: Convert to fraction form
    265.35/395.74 = 239.43/x
  3. Step 3: Cross multiply
    265.35x = 395.74 × 239.43
  4. Step 4: Simplify right side
    265.35x = 94,751.43
  5. Step 5: Solve for x
    x = 94,751.43/265.35
  6. Step 6: Final answer
    x = 357.08

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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.