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Finding the Fourth Proportional to 270.92, 405.51 and 148.88

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Solution

The fourth proportional to 270.92, 405.51 and 148.88 is: 222.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.92 : 405.51 = 148.88 : x
  2. Step 2: Convert to fraction form
    270.92/405.51 = 148.88/x
  3. Step 3: Cross multiply
    270.92x = 405.51 × 148.88
  4. Step 4: Simplify right side
    270.92x = 60,372.33
  5. Step 5: Solve for x
    x = 60,372.33/270.92
  6. Step 6: Final answer
    x = 222.84

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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.