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Finding the Fourth Proportional to 265.91, 369.14 and 258.39

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Solution

The fourth proportional to 265.91, 369.14 and 258.39 is: 358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.91 : 369.14 = 258.39 : x
  2. Step 2: Convert to fraction form
    265.91/369.14 = 258.39/x
  3. Step 3: Cross multiply
    265.91x = 369.14 × 258.39
  4. Step 4: Simplify right side
    265.91x = 95,380.79
  5. Step 5: Solve for x
    x = 95,380.79/265.91
  6. Step 6: Final answer
    x = 358.70

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.