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Finding the Fourth Proportional to 258.97, 390.45 and 241.36

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Solution

The fourth proportional to 258.97, 390.45 and 241.36 is: 363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.97 : 390.45 = 241.36 : x
  2. Step 2: Convert to fraction form
    258.97/390.45 = 241.36/x
  3. Step 3: Cross multiply
    258.97x = 390.45 × 241.36
  4. Step 4: Simplify right side
    258.97x = 94,239.01
  5. Step 5: Solve for x
    x = 94,239.01/258.97
  6. Step 6: Final answer
    x = 363.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.