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Finding the Fourth Proportional to 268.58, 370.60 and 163.69

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Solution

The fourth proportional to 268.58, 370.60 and 163.69 is: 225.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.58 : 370.60 = 163.69 : x
  2. Step 2: Convert to fraction form
    268.58/370.60 = 163.69/x
  3. Step 3: Cross multiply
    268.58x = 370.60 × 163.69
  4. Step 4: Simplify right side
    268.58x = 60,663.51
  5. Step 5: Solve for x
    x = 60,663.51/268.58
  6. Step 6: Final answer
    x = 225.87

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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.