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Finding the Fourth Proportional to 265.28, 368.15 and 258.75

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Solution

The fourth proportional to 265.28, 368.15 and 258.75 is: 359.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.28 : 368.15 = 258.75 : x
  2. Step 2: Convert to fraction form
    265.28/368.15 = 258.75/x
  3. Step 3: Cross multiply
    265.28x = 368.15 × 258.75
  4. Step 4: Simplify right side
    265.28x = 95,257.52
  5. Step 5: Solve for x
    x = 95,257.52/265.28
  6. Step 6: Final answer
    x = 359.09

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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.