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Finding the Fourth Proportional to 267.33, 398.37 and 258.63

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Solution

The fourth proportional to 267.33, 398.37 and 258.63 is: 385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.33 : 398.37 = 258.63 : x
  2. Step 2: Convert to fraction form
    267.33/398.37 = 258.63/x
  3. Step 3: Cross multiply
    267.33x = 398.37 × 258.63
  4. Step 4: Simplify right side
    267.33x = 103,030.43
  5. Step 5: Solve for x
    x = 103,030.43/267.33
  6. Step 6: Final answer
    x = 385.41

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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.