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Finding the Fourth Proportional to 297.01, 445.65 and 258.94

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Solution

The fourth proportional to 297.01, 445.65 and 258.94 is: 388.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.01 : 445.65 = 258.94 : x
  2. Step 2: Convert to fraction form
    297.01/445.65 = 258.94/x
  3. Step 3: Cross multiply
    297.01x = 445.65 × 258.94
  4. Step 4: Simplify right side
    297.01x = 115,396.61
  5. Step 5: Solve for x
    x = 115,396.61/297.01
  6. Step 6: Final answer
    x = 388.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.