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Finding the Fourth Proportional to 270.99, 407.43 and 149.49

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Solution

The fourth proportional to 270.99, 407.43 and 149.49 is: 224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.99 : 407.43 = 149.49 : x
  2. Step 2: Convert to fraction form
    270.99/407.43 = 149.49/x
  3. Step 3: Cross multiply
    270.99x = 407.43 × 149.49
  4. Step 4: Simplify right side
    270.99x = 60,906.71
  5. Step 5: Solve for x
    x = 60,906.71/270.99
  6. Step 6: Final answer
    x = 224.76

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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.