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Finding the Fourth Proportional to 230.44, 345.86 and 165.64

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Solution

The fourth proportional to 230.44, 345.86 and 165.64 is: 248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.44 : 345.86 = 165.64 : x
  2. Step 2: Convert to fraction form
    230.44/345.86 = 165.64/x
  3. Step 3: Cross multiply
    230.44x = 345.86 × 165.64
  4. Step 4: Simplify right side
    230.44x = 57,285.69
  5. Step 5: Solve for x
    x = 57,285.69/230.44
  6. Step 6: Final answer
    x = 248.60

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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.