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Finding the Fourth Proportional to 267.99, 398.82 and 258.27

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Solution

The fourth proportional to 267.99, 398.82 and 258.27 is: 384.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.99 : 398.82 = 258.27 : x
  2. Step 2: Convert to fraction form
    267.99/398.82 = 258.27/x
  3. Step 3: Cross multiply
    267.99x = 398.82 × 258.27
  4. Step 4: Simplify right side
    267.99x = 103,003.24
  5. Step 5: Solve for x
    x = 103,003.24/267.99
  6. Step 6: Final answer
    x = 384.35

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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.