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Finding the Fourth Proportional to 297.15, 445.45 and 134.74

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Solution

The fourth proportional to 297.15, 445.45 and 134.74 is: 201.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.15 : 445.45 = 134.74 : x
  2. Step 2: Convert to fraction form
    297.15/445.45 = 134.74/x
  3. Step 3: Cross multiply
    297.15x = 445.45 × 134.74
  4. Step 4: Simplify right side
    297.15x = 60,019.93
  5. Step 5: Solve for x
    x = 60,019.93/297.15
  6. Step 6: Final answer
    x = 201.99

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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.