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Finding the Fourth Proportional to 270.12, 372.64 and 166.68

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Solution

The fourth proportional to 270.12, 372.64 and 166.68 is: 229.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.12 : 372.64 = 166.68 : x
  2. Step 2: Convert to fraction form
    270.12/372.64 = 166.68/x
  3. Step 3: Cross multiply
    270.12x = 372.64 × 166.68
  4. Step 4: Simplify right side
    270.12x = 62,111.64
  5. Step 5: Solve for x
    x = 62,111.64/270.12
  6. Step 6: Final answer
    x = 229.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.