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Finding the Fourth Proportional to 297.99, 447.15 and 124.68

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Solution

The fourth proportional to 297.99, 447.15 and 124.68 is: 187.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.99 : 447.15 = 124.68 : x
  2. Step 2: Convert to fraction form
    297.99/447.15 = 124.68/x
  3. Step 3: Cross multiply
    297.99x = 447.15 × 124.68
  4. Step 4: Simplify right side
    297.99x = 55,748.43
  5. Step 5: Solve for x
    x = 55,748.43/297.99
  6. Step 6: Final answer
    x = 187.08

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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.